Cluster Manager: improved cleanup/error handling in various functions
Cluster Manager: improved cleanup/error handling in various functions

antirez/redis,PKRoma/redis,spinlock/redis,GitHubMota/redis,soveran/redis,oranagra/redis,soloestoy/redis,nnog/redis,neomantra/redis,pmem/redis,ofirluzon/redis,oranagra/redis,ofirluzon/redis,soveran/redis,ofirluzon/redis,ctripcorp/redis,oranagra/redis,charsyam/redis,PKRoma/redis,soloestoy/redis,pmem/redis,yossigo/redis,soveran/redis,GitHubMota/redis,pmem/redis,pmem/redis,PKRoma/redis,spinlock/redis,neomantra/redis,charsyam/redis,neomantra/redis,oranagra/redis,spinlock/redis,GitHubMota/redis,ofirluzon/redis,nnog/redis,antirez/redis,yossigo/redis,neomantra/redis,soloestoy/redis,neomantra/redis,charsyam/redis,soloestoy/redis,spinlock/redis,PKRoma/redis,nnog/redis,ctripcorp/redis,ctripcorp/redis,oranagra/redis,yossigo/redis,antirez/redis,antirez/redis,charsyam/redis,GitHubMota/redis,PKRoma/redis,soloestoy/redis,charsyam/redis,yossigo/redis,soveran/redis,nnog/redis,ofirluzon/redis,ctripcorp/redis,yossigo/redis