Various sync related fixes (#650)

*  Add workerpools load on Prometheus

*  Fix bug

*  Change unlock order in MessageRequester StartRequest

*  Refactor gossip manager workerpools

*  Disable filter workerpools

*  Increase WorkerPools size

*  Increase docker shutdown timeout

*  Clean up code

*  Refactor

*  Remove filter shutdown

*  Increase messageRequestWorkerCount