Cluster: always increment the configEpoch in SETNODE after import.
Cluster: always increment the configEpoch in SETNODE after import.

Removed a stale conditional preventing the configEpoch from incrementing
after the import in certain conditions. Since the master got a new slot
it should always claim a new configuration.

JackieXie168/redis,JackieXie168/redis,JackieXie168/redis,JackieXie168/redis