Clustering : Operation is timeout when invoking remote routed rpc

When routed rpc in model bundle loaded after odl-mdsal-clustering, remotely invoking such routed rpc always causes timeout exception.

From debug level loggings, it shows that RpcBroker fails in transforming input composite node to xml due to absent of scheme context for this rpc.

In RpcBroker, the property schemaContext is defined as final and initialized via RpcManager, which is further initialized via RemoteRpcProvider. It is obvious that all model bundles loaded after sal-remoterpc-connector can not push schemes to RpcBroker.