ODL takes 4 minutes to execute an update LSP command

Scenario:
1. Create LSP
2. Subscribe to LSP change notification
3. Listen to events, detect whenever LSP goes down
4. Modify LSP to take alternative path (in separate thread)
5. Note how log does command execution take

It takes 4 mins to execute the command on our setup (tested on two different setups, in both cases took 4 mins)

NetworkTopologyPcepService.updateLsp() has been used in particular