InitRTC has to do modifications of gerrit.config in run() method

Modifications of gerrit.config done in the postRun() method are not
persisted in the review site.

Change-Id: I23e8521c9d72d65b21a701a8db97ccb498bd3afd
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>
diff --git a/src/main/java/com/googlesource/gerrit/plugins/hooks/rtc/InitRTC.java b/src/main/java/com/googlesource/gerrit/plugins/hooks/rtc/InitRTC.java
index 6cc0639..6f0cd2f 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/hooks/rtc/InitRTC.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/hooks/rtc/InitRTC.java
@@ -51,8 +51,9 @@
     this.sections = sections;
   }
 
-  public void postRun() throws IOException, ConfigInvalidException {
-    super.postRun();
+  @Override
+  public void run() throws IOException, ConfigInvalidException {
+    super.run();
 
     this.rtc = sections.get(pluginName, null);
     this.rtcComment =