Return plugin name rather than hard-coded "Bugzilla"

Change-Id: Ib597006346d259528f8b738eef307611ba37bfec

src/main/java/com/googlesource/gerrit/plugins/hooks/bz/BugzillaItsFacade.java

diff --git a/src/main/java/com/googlesource/gerrit/plugins/hooks/bz/BugzillaItsFacade.java b/src/main/java/com/googlesource/gerrit/plugins/hooks/bz/BugzillaItsFacade.java
index b6ff5b8..b51ca09 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/hooks/bz/BugzillaItsFacade.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/hooks/bz/BugzillaItsFacade.java
@@ -59,7 +59,7 @@
 
   @Override
   public String name() {
-    return "Bugzilla";
+    return pluginName;
   }
 
   @Override