Move Certificate install in resotre path to DEBUG

We are seeing 387+ `Certificate install` messages for a single boot in
the journal log.

Moved the `Certifacte install` log for the restore path to DEBUG instead
of INFO to remove it on the normal jorunal logs.

Tested:
```
systemctl status phosphor-certificate-manager@bmcweb.service
* phosphor-certificate-manager@bmcweb.service - Phosphor certificate manager for bmcweb
     Loaded: loaded (/lib/systemd/system/phosphor-certificate-manager@.service; static)
     Active: active (running) since Fri 2018-03-09 19:19:02 UTC; 24s ago
   Main PID: 25773 (phosphor-certif)
     CGroup: /system.slice/system-phosphor\x2dcertificate\x2dmanager.slice/phosphor-certificate-manager@bmcweb.service
             `-25773 /usr/bin/phosphor-certificate-manager --endpoint https --path /path/server.pem --type server --unit server_creds.target

Mar 09 19:19:02 [hostname] systemd[1]: Started Phosphor certificate manager for bmcweb.
Mar 09 19:19:03 [hostname] phosphor-certificate-manager[25773]: Error occurred during X509_verify_cert call, checking for known error
Mar 09 19:19:03 [hostname] phosphor-certificate-manager[25773]: Certificate compareKeys
Mar 09 19:19:03 [hostname] phosphor-certificate-manager[25773]: Certificate install
...
```

Change-Id: I907afd6ce4522e5c54348d16c1ace0a770f3b8f1
Signed-off-by: Willy Tu <wltu@google.com>
diff --git a/certificate.cpp b/certificate.cpp
index bf20845..9628b55 100644
--- a/certificate.cpp
+++ b/certificate.cpp
@@ -231,7 +231,7 @@
 Certificate::Certificate(sdbusplus::bus_t& bus, const std::string& objPath,
                          CertificateType type, const std::string& installPath,
                          const std::string& uploadPath, Watch* watch,
-                         Manager& parent) :
+                         Manager& parent, bool restore) :
     internal::CertificateInterface(
         bus, objPath.c_str(),
         internal::CertificateInterface::action::defer_emit),
@@ -261,7 +261,7 @@
     certFilePath = generateCertFilePath(uploadPath);
 
     // install the certificate
-    install(uploadPath);
+    install(uploadPath, restore);
 
     this->emit_object_added();
 }
@@ -270,7 +270,7 @@
                          const CertificateType& type,
                          const std::string& installPath, X509_STORE& x509Store,
                          const std::string& pem, Watch* watchPtr,
-                         Manager& parent) :
+                         Manager& parent, bool restore) :
     internal::CertificateInterface(
         bus, objPath.c_str(),
         internal::CertificateInterface::action::defer_emit),
@@ -281,7 +281,7 @@
     certFilePath = generateUniqueFilePath(installPath);
 
     // install the certificate
-    install(x509Store, pem);
+    install(x509Store, pem, restore);
 
     this->emit_object_added();
 }
@@ -300,10 +300,18 @@
     manager.replaceCertificate(this, filePath);
 }
 
-void Certificate::install(const std::string& certSrcFilePath)
+void Certificate::install(const std::string& certSrcFilePath, bool restore)
 {
-    log<level::INFO>("Certificate install ",
-                     entry("FILEPATH=%s", certSrcFilePath.c_str()));
+    if (restore)
+    {
+        log<level::DEBUG>("Certificate install ",
+                          entry("FILEPATH=%s", certSrcFilePath.c_str()));
+    }
+    else
+    {
+        log<level::INFO>("Certificate install ",
+                         entry("FILEPATH=%s", certSrcFilePath.c_str()));
+    }
 
     // stop watch for user initiated certificate install
     if (certWatch != nullptr)
@@ -388,9 +396,19 @@
     }
 }
 
-void Certificate::install(X509_STORE& x509Store, const std::string& pem)
+void Certificate::install(X509_STORE& x509Store, const std::string& pem,
+                          bool restore)
 {
-    log<level::INFO>("Certificate install ", entry("PEM_STR=%s", pem.data()));
+    if (restore)
+    {
+        log<level::DEBUG>("Certificate install ",
+                          entry("PEM_STR=%s", pem.data()));
+    }
+    else
+    {
+        log<level::INFO>("Certificate install ",
+                         entry("PEM_STR=%s", pem.data()));
+    }
 
     if (certType != CertificateType::authority)
     {
diff --git a/certificate.hpp b/certificate.hpp
index e6d22d1..8a5f70e 100644
--- a/certificate.hpp
+++ b/certificate.hpp
@@ -96,10 +96,12 @@
      *  @param[in] uploadPath - Path of the certificate file to upload
      *  @param[in] watchPtr - watch on self signed certificate
      *  @param[in] parent - the manager that owns the certificate
+     *  @param[in] restore - the certificate is created in the restore path
      */
     Certificate(sdbusplus::bus_t& bus, const std::string& objPath,
                 CertificateType type, const std::string& installPath,
-                const std::string& uploadPath, Watch* watch, Manager& parent);
+                const std::string& uploadPath, Watch* watch, Manager& parent,
+                bool restore);
 
     /** @brief Constructor for the Certificate Object; a variant for authorities
      * list install
@@ -114,18 +116,20 @@
      *  @param[in] watchPtr - watch on self signed certificate
      *  @param[in] parent - Pointer to the manager which owns the constructed
      * Certificate object
+     *  @param[in] restore - the certificate is created in the restore path
      */
     Certificate(sdbusplus::bus_t& bus, const std::string& objPath,
                 const CertificateType& type, const std::string& installPath,
                 X509_STORE& x509Store, const std::string& pem, Watch* watchPtr,
-                Manager& parent);
+                Manager& parent, bool restore);
 
     /** @brief Validate and Replace/Install the certificate file
      *  Install/Replace the existing certificate file with another
      *  (possibly CA signed) Certificate file.
      *  @param[in] filePath - Certificate file path.
+     *  @param[in] restore - the certificate is created in the restore path
      */
-    void install(const std::string& filePath);
+    void install(const std::string& filePath, bool restore);
 
     /** @brief Validate and Replace/Install the certificate file
      *  Install/Replace the existing certificate file with another
@@ -133,8 +137,9 @@
      *  @param[in] x509Store - an initialized X509 store used for certificate
      * validation; Certificate object doesn't own it
      *  @param[in] pem - a string buffer which stores a PEM encoded certificate.
+     *  @param[in] restore - the certificate is created in the restore path
      */
-    void install(X509_STORE& x509Store, const std::string& pem);
+    void install(X509_STORE& x509Store, const std::string& pem, bool restore);
 
     /** @brief Validate certificate and replace the existing certificate
      *  @param[in] filePath - Certificate file path.
diff --git a/certs_manager.cpp b/certs_manager.cpp
index 0d0a87a..984a896 100644
--- a/certs_manager.cpp
+++ b/certs_manager.cpp
@@ -267,7 +267,7 @@
         certObjectPath = objectPath + '/' + std::to_string(certIdCounter);
         installedCerts.emplace_back(std::make_unique<Certificate>(
             bus, certObjectPath, certType, certInstallPath, filePath,
-            certWatchPtr.get(), *this));
+            certWatchPtr.get(), *this, /*restore=*/false));
         reloadOrReset(unitToRestart);
         certIdCounter++;
     }
@@ -329,7 +329,7 @@
             objectPath + '/' + std::to_string(tempCertIdCounter);
         tempCertificates.emplace_back(std::make_unique<Certificate>(
             bus, certObjectPath, certType, tempPath, *x509Store, authority,
-            certWatchPtr.get(), *this));
+            certWatchPtr.get(), *this, /*restore=*/false));
         tempCertIdCounter++;
     }
 
@@ -425,7 +425,7 @@
 {
     if (isCertificateUnique(filePath, certificate))
     {
-        certificate->install(filePath);
+        certificate->install(filePath, false);
         storageUpdate();
         reloadOrReset(unitToRestart);
     }
@@ -958,7 +958,7 @@
                     installedCerts.emplace_back(std::make_unique<Certificate>(
                         bus, certObjectPath + std::to_string(certIdCounter++),
                         certType, certInstallPath, path.path(),
-                        certWatchPtr.get(), *this));
+                        certWatchPtr.get(), *this, /*restore=*/true));
                 }
             }
             catch (const InternalFailure& e)
@@ -978,7 +978,7 @@
         {
             installedCerts.emplace_back(std::make_unique<Certificate>(
                 bus, certObjectPath + '1', certType, certInstallPath,
-                certInstallPath, certWatchPtr.get(), *this));
+                certInstallPath, certWatchPtr.get(), *this, /*restore=*/false));
         }
         catch (const InternalFailure& e)
         {