Support uploading multiple certificates per authority service

Since the certificate manager can support multiple certificates
the CERTPATH for mode=authentication will be changed to directory.

This change depends on anothere review, see Depends-On tag.

Becase the TrustStore will be used by TLS authentication,
any operation on certificates should result in bmcweb restart, that
is why #Units to restart entry is added.

Since update procedure will not replace configuration file in /etc
all configuration files for the certificate-manager will be deployed
in /usr/share/phosphor-certificate-manager.

Signed-off-by: Zbigniew Kurzynski <zbigniew.kurzynski@intel.com>
Change-Id: I9c179751742e913faf633a7654e22ad0654fbb37
diff --git a/recipes-phosphor/certificate/phosphor-certificate-manager/phosphor-certificate-manager@.service b/recipes-phosphor/certificate/phosphor-certificate-manager/phosphor-certificate-manager@.service
index a821566..255906f 100644
--- a/recipes-phosphor/certificate/phosphor-certificate-manager/phosphor-certificate-manager@.service
+++ b/recipes-phosphor/certificate/phosphor-certificate-manager/phosphor-certificate-manager@.service
@@ -2,7 +2,7 @@
 Description=Phosphor certificate manager for %I
 
 [Service]
-EnvironmentFile={envfiledir}/obmc/cert/%I
+EnvironmentFile=/usr/share/phosphor-certificate-manager/%I
 ExecStart=/usr/bin/env phosphor-certificate-manager --endpoint=${{ENDPOINT}} --path=${{CERTPATH}} --unit=${{UNIT}} --type=${{TYPE}}
 SyslogIdentifier=phosphor-certificate-manager
 Restart=always