Fix div by 0 in redis-cli cluster creation (#8553)
Fix div by 0 in redis-cli cluster creation (#8553)

This could happen on an invalid use, when trying to create a cluster with
a single node and provide it's address 3 time to satisfy redis-cli requirements.
oranagra/redis,soloestoy/redis,yossigo/redis,yossigo/redis,ctripcorp/redis,ofirluzon/redis,oranagra/redis,ctripcorp/redis,yossigo/redis,PKRoma/redis,charsyam/redis,PKRoma/redis,yossigo/redis,ofirluzon/redis,soloestoy/redis,neomantra/redis,PKRoma/redis,soloestoy/redis,PKRoma/redis,charsyam/redis,yossigo/redis,soloestoy/redis,antirez/redis,charsyam/redis,neomantra/redis,neomantra/redis,charsyam/redis,ctripcorp/redis,PKRoma/redis,oranagra/redis,neomantra/redis,ofirluzon/redis,oranagra/redis,ofirluzon/redis,antirez/redis,ctripcorp/redis,soloestoy/redis,oranagra/redis,antirez/redis,antirez/redis,neomantra/redis,ofirluzon/redis,charsyam/redis