Replace slave with replica in vtctl commands and flags#467

Merged

deepthi merged 4 commits intoprodfrom

rename-slave-replica

Jul 16, 2020

Commits on Jul 8, 2020

change references to wait_slave_timeout -> wait_replicas_timeout
deepthi
committed

Commits on Jul 13, 2020

rename wait_slave_timeout flags to wait_replicas_timeout
deepthi
committed

Commits on Jul 14, 2020