c# core: fix for PAM
Merge branch 'develop' into pt70140526
Merge branch 'develop' into pt70140526
PAM fix and user state related

consolidation of local user state and user state
bounce sub connection on user state change
PresenceHeartbeatInterval default value
minor change
Updated test cases based on PAM fix
updated app.config file for error filter level
updated test case for large message 32K limit