Add fmtlib for phosphor-debug-collector

Call fmtlib to get additional information from journal.

Tested: built phosphor-debug-collector successfully
        and Unit Test passes.

Signed-off-by: George Liu <liuxiwei@inspur.com>
Change-Id: Ibe65637a0b29b76269fb4bc3f498438901c9306a
diff --git a/dump_manager_main.cpp b/dump_manager_main.cpp
index 207de53..1eb5b31 100644
--- a/dump_manager_main.cpp
+++ b/dump_manager_main.cpp
@@ -8,6 +8,8 @@
 #include "watch.hpp"
 #include "xyz/openbmc_project/Common/error.hpp"
 
+#include <fmt/core.h>
+
 #include <phosphor-logging/elog-errors.hpp>
 #include <sdbusplus/bus.hpp>
 
@@ -25,8 +27,10 @@
     auto rc = sd_event_default(&event);
     if (rc < 0)
     {
-        log<level::ERR>("Error occurred during the sd_event_default",
-                        entry("RC=%d", rc));
+        log<level::ERR>(
+            fmt::format("Error occurred during the sd_event_default, rc({})",
+                        rc)
+                .c_str());
         report<InternalFailure>();
         return rc;
     }
@@ -37,22 +41,25 @@
     sigset_t mask;
     if (sigemptyset(&mask) < 0)
     {
-        log<level::ERR>("Unable to initialize signal set",
-                        entry("ERRNO=%d", errno));
+        log<level::ERR>(
+            fmt::format("Unable to initialize signal set, errno({})", errno)
+                .c_str());
         return EXIT_FAILURE;
     }
 
     if (sigaddset(&mask, SIGCHLD) < 0)
     {
-        log<level::ERR>("Unable to add signal to signal set",
-                        entry("ERRNO=%d", errno));
+        log<level::ERR>(
+            fmt::format("Unable to add signal to signal set, errno({})", errno)
+                .c_str());
         return EXIT_FAILURE;
     }
 
     // Block SIGCHLD first, so that the event loop can handle it
     if (sigprocmask(SIG_BLOCK, &mask, nullptr) < 0)
     {
-        log<level::ERR>("Unable to block signal", entry("ERRNO=%d", errno));
+        log<level::ERR>(
+            fmt::format("Unable to block signal, errno({})", errno).c_str());
         return EXIT_FAILURE;
     }
 
@@ -86,8 +93,10 @@
         auto rc = sd_event_loop(eventP.get());
         if (rc < 0)
         {
-            log<level::ERR>("Error occurred during the sd_event_loop",
-                            entry("RC=%d", rc));
+            log<level::ERR>(
+                fmt::format("Error occurred during the sd_event_loop, rc({})",
+                            rc)
+                    .c_str());
             elog<InternalFailure>();
         }
     }