Removing restart on license post

hooks/pg_dir_hooks.py

@@ -66,13 +66,14 @@ def config_changed():
     This hook is run when a config parameter is changed.
     It also runs on node reboot.
     '''
-    if post_pg_license():
-        log("PLUMgrid License Posted")
-        return 1
     if add_lcm_key():
         log("PLUMgrid LCM Key added")
         return 1
     charm_config = config()
+    if charm_config.changed('plumgrid-license-key'):
+        if post_pg_license():
+            log("PLUMgrid License Posted")
+        return 1
     if charm_config.changed('fabric-interfaces'):
         if not fabric_interface_changed():
             log("Fabric interface already set")