Use Provider<PersonIdent> in CreateProject @Singleton

This avoids reusing timestamps for the empty commit of newly created
projects.

Change-Id: I669da24b5fd3ac08dc192da91b967dec5fca8cda
diff --git a/java/com/google/gerrit/server/restapi/project/CreateProject.java b/java/com/google/gerrit/server/restapi/project/CreateProject.java
index 7773914..60a24d8 100644
--- a/java/com/google/gerrit/server/restapi/project/CreateProject.java
+++ b/java/com/google/gerrit/server/restapi/project/CreateProject.java
@@ -109,7 +109,7 @@
   private final MetaDataUpdate.User metaDataUpdateFactory;
   private final GitReferenceUpdated referenceUpdated;
   private final RepositoryConfig repositoryCfg;
-  private final PersonIdent serverIdent;
+  private final Provider<PersonIdent> serverIdent;
   private final Provider<IdentifiedUser> identifiedUser;
   private final Provider<PutConfig> putConfig;
   private final AllProjectsName allProjects;
@@ -131,7 +131,7 @@
       MetaDataUpdate.User metaDataUpdateFactory,
       GitReferenceUpdated referenceUpdated,
       RepositoryConfig repositoryCfg,
-      @GerritPersonIdent PersonIdent serverIdent,
+      @GerritPersonIdent Provider<PersonIdent> serverIdent,
       Provider<IdentifiedUser> identifiedUser,
       Provider<PutConfig> putConfig,
       AllProjectsName allProjects,
@@ -357,7 +357,7 @@
       CommitBuilder cb = new CommitBuilder();
       cb.setTreeId(oi.insert(Constants.OBJ_TREE, new byte[] {}));
       cb.setAuthor(metaDataUpdateFactory.getUserPersonIdent());
-      cb.setCommitter(serverIdent);
+      cb.setCommitter(serverIdent.get());
       cb.setMessage("Initial empty repository\n");
 
       ObjectId id = oi.insert(cb);