1. Add process connection info for python daemons. Currently reported by
   opserver.
2. Add updation of process connection info from discovery client and
   sandesh client python libraries.

Change-Id: Ib8f7430120a1d72872bdaada60305bef88384d18
Merge "1. Add process connection info for python daemons. Currently reported by    opserver. 2. Add updation of process connection info from discovery client and    sandesh client python libraries."