[sairedis] Advance pointer to fix rpc thrift (#4079)

567191f [sairedis] Add knob to disable recording statistics API calls (#547)
8513506 Create Switch and SwitchContainer classes (#549) …
e991281 Update .gitignore (#551)
84b0eed [sairedis] Skip recording GET operations on AVAILABLE attributes (#550) …
634e4e3 [meta] Return OBJECT_IN_USE when removing port is in use (#553)
2961bd3 [syncd] Fix rpc server flag condition (#557)