Fix some minor bugs in redis-cli (#8982)
Fix some minor bugs in redis-cli (#8982)

* clusterManagerAddSlots check argv_idx error.

* clusterManagerLoadInfoFromNode remove unused param opts.

* redis-cli node->ip may be an sds or a c string. Using %s to format
is always right, %S may be wrong.

* In clusterManagerFixOpenSlot clusterManagerBumpEpoch call is redundant,
because it is already called in clusterManagerSetSlotOwner.

* redis-cli cluster help add more commands in help messages.
JackieXie168/redis,JackieXie168/redis,JackieXie168/redis,JackieXie168/redis