1. Error statistics reporting was not working in protobuf collector due
   to wrong usage/binding of boost::bind.
2. Added message_name as an index to viz.sandesh for ProtobufCollectorStats
   rx_message_stats.
3. Added test case for 1 above.
Closes-Bug: #1400851

Change-Id: Ie4ad5d6e7f7baf850bc16f93d2da9e67ba499e88
Merge "1. Error statistics reporting was not working in protobuf collector due    to wrong usage/binding of boost::bind. 2. Added message_name as an index to viz.sandesh for ProtobufCollectorStats    rx_message_stats. 3. Added test case for 1 above. Closes-Bug: #1400851"