Correct the fedmsg policy for the pkgs box.

inventory/group_vars/pkgs

@@ -42,15 +42,16 @@ fedmsg_certs:
 - service: shell
   owner: root
   group: sysadmin
-- service: scm
-  owner: root
-  group: packager
   can_send:
   - git.branch
   - git.mass_branch.complete
   - git.mass_branch.start
   - git.pkgdb2branch.complete
   - git.pkgdb2branch.start
+- service: scm
+  owner: root
+  group: packager
+  can_send:
   - git.receive
 - service: lookaside
   owner: root