[Sentinel] more specific config errors for duplicate known-replica and known-sentinel (#8332)
[Sentinel] more specific config errors for duplicate known-replica and known-sentinel (#8332)

Previously invalid configuration errors were not very specific and in some cases hard to understand.

Co-authored-by: Yossi Gottlieb <5c647eb9e8c0d63fff1fa3883ab8f9a70a273fea@gmail.com>
JackieXie168/redis,JackieXie168/redis,JackieXie168/redis,JackieXie168/redis