VersionedMetaData: Emit debug log after update has been committed

Log the commit message and the revision that was created.

Also update the existing log to put the message in quotes, and
include the name of the project.

Change-Id: Id8c8eea622f54600a822d14abdd4da2db5d727b1

java/com/google/gerrit/server/git/meta/VersionedMetaData.java

@@ -409,7 +409,7 @@ public abstract class VersionedMetaData {
           // read the subject line and use it as reflog message
           ru.setRefLogMessage("commit: " + reader.readLine(), true);
         }
-        logger.atFine().log("Saving commit: %s", message.trim());
+        logger.atFine().log("Saving commit '%s' on project '%s'", message.trim(), projectName);
         inserter.flush();
         RefUpdate.Result result = ru.update();
         switch (result) {
@@ -417,6 +417,9 @@ public abstract class VersionedMetaData {
           case FAST_FORWARD:
             revision = rw.parseCommit(ru.getNewObjectId());
             update.fireGitRefUpdatedEvent(ru);
+            logger.atFine().log(
+                "Saved commit '%s' as revision '%s' on project '%s'",
+                message.trim(), revision.name(), projectName);
             return revision;
           case LOCK_FAILURE:
             throw new LockFailureException(errorMsg(ru, db.getDirectory()), ru);