Fix tag registration for initial tags.

Tag version was not registered.

ccnode/node.py

@@ -138,19 +138,17 @@ class RPCStartHandler(Thread):
             # close previous plugins if needed
             if self.loop.role is not None:
                 self.loop.close_plugins()
-                # re-register the tags of the main loop
-                self.loop.tag_db.register()
             logger.debug('Role host affected')
             from ccnode.host import Handler as HostHandler
             self.loop.main_plugin = HostHandler(loop=self.loop)
             self.loop.role = u'host'
+            # (re)-register the tags of the main loop
+            self.loop.tag_db.rpc_register()
             self.loop.register_plugin(self.loop.main_plugin)
         elif response == u'hv':
             # close previous plugins if needed
             if self.loop.role is not None:
                 self.loop.close_plugins()
-                # re-register the tags of the main loop
-                self.loop.tag_db.register()
             logger.debug('Role hypervisor affected')
             # we don't import those modules at the top because some dependancies
             # may not be installed
@@ -160,6 +158,8 @@ class RPCStartHandler(Thread):
                 loop=self.loop,
             )
             self.loop.role = u'hv'
+            # (re)-register the tags of the main loop
+            self.loop.tag_db.rpc_register()
             self.loop.register_plugin(self.loop.main_plugin)
         else:
             logger.error('Failed authentication, role returned: %s', response)