Return plugin name rather than hard-coded "RTC"

Change-Id: I81439b2bd026250118a0e2856ba2dcd79fd10b23

src/main/java/com/googlesource/gerrit/plugins/hooks/rtc/RTCItsFacade.java

diff --git a/src/main/java/com/googlesource/gerrit/plugins/hooks/rtc/RTCItsFacade.java b/src/main/java/com/googlesource/gerrit/plugins/hooks/rtc/RTCItsFacade.java
index dafcf65..8f7f31d 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/hooks/rtc/RTCItsFacade.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/hooks/rtc/RTCItsFacade.java
@@ -63,7 +63,7 @@
 
   @Override
   public String name() {
-    return "RTC";
+    return pluginName;
   }
 
   @Override