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

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