1. Change contrail-status to do HTTP introspect query to find
   NodeStatus.ProcessState.state for a process and use it to
   determine the status of the service printed.
2. Added a new state - initializing to contrail-status.
3. Added map for service name to default HTTP introspect ports in
   vns.sandesh
4. Change pysandesh to display the uve data type instead of the
   uve type in sandesh uve types request to make it consistent
   with the C++ library. Fix opserver:test due to above change.

Closes-Bug: #1326294
Change-Id: I809ed9d1f436841ead5091dee2cbf39998e1b9d6
Merge "1. Change contrail-status to do HTTP introspect query to find    NodeStatus.ProcessState.state for a process and use it to    determine the status of the service printed. 2. Added a new state - initializing to contrail-status. 3. Added map for service name to default HTTP introspect ports in    vns.sandesh 4. Change pysandesh to display the uve data type instead of the    uve type in sandesh uve types request to make it consistent    with the C++ library. Fix opserver:test due to above change."