Rename action Block/UnBlock and Update Orch

Rename action Block/UnBlock and Update Orch

StopApplication : Renamed block traffic action to StopApplication.
Transition of status in AAI will  be stopping on accepting request
followed by Stopped for Success and Error for error scenario’s
StartApplicaiton: Renamed  unblock traffic action to StartApplication.
Transition of status in AAI will be starting on accepting request
followed by Running for Success and Error for error scenario’s.
Refactored to handle actions on basis of ReadOnly,OrchestrationStatus,
BuiltIn and OperationalStatus instead of individual actions.

Change-Id: Ia7c6b233ac9a0aabeb9a1f7d715629917f6b7b86
Issue-ID:APPC-55
Signed-off-by: mojahidi <mojahidul.islam@amdocs.com>