Update notes for submitted changes

* 1. Update process connection state in discovery SubscribeResponseHandler    even when the received response is the same as the cached response    to avoid incorrectly reporting process connection state as    Initializing if an intermediate failure happens after a    previous success response. 2. In contrail-vrouter-agent, check for connection state not UP    instead of DOWN when declaring process state as non-functional to    handle scenario when process connection state is stuck in    Initializing.