Refactor init_generator so that introspect port
Refactor init_generator so that introspect port

can be opened independently without reconnecting to
collector.

Change-Id: I5951c8995a6789035a275129ab1ad600c990b94e
Partial-Bug: 1682683

Juniper/contrail-sandesh,Juniper/contrail-sandesh,Juniper/contrail-sandesh,Juniper/contrail-sandesh