Buildbot options only available to authenticated users

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>

dev/buildbot/master/master.cfg

@@ -1054,11 +1054,11 @@ authz_cfg=authz.Authz(
     auth=auth.BasicAuth([(web_auth['user'], web_auth['pass'])]),
     gracefulShutdown = False,
     forceBuild = 'auth', # use this to test your slave once it is set up
-    forceAllBuilds = True,
+    forceAllBuilds = 'auth',
     pingBuilder = False,
-    stopBuild = True,
-    stopAllBuilds = True,
-    cancelPendingBuild = True,
+    stopBuild = 'auth',
+    stopAllBuilds = 'auth',
+    cancelPendingBuild = 'auth',
 )
 c['status'].append(html.WebStatus(http_port=8010, authz=authz_cfg))