use the same name for repository and pluginRepository entries in settings.xml

This is required because of http://jira.codehaus.org/browse/MNG-5475

builder/kojid

@@ -250,12 +250,10 @@ class BuildRoot(object):
         entries = []
         if plugin:
             tag_name = 'pluginRepository'
-            id_suffix = 'plugin-repo'
-            name_prefix = 'Plugin repository for Koji'
         else:
             tag_name = 'repository'
-            id_suffix = 'repo'
-            name_prefix = 'Repository for Koji'
+        id_suffix = 'repo'
+        name_prefix = 'Repository for Koji'
         for dep in self.deps:
             if isinstance(dep, (int, long)):
                 # dep is a task ID, the url points to the task output directory