Merge branch 'ph2'
Merge remote-tracking branch 'remotes/banrui/master' into ph2
revert let setting(rspec)
Finish to develop [Phase2]
make controller of cluster & try to use SSH connection
get func of getting routing history & each instance status & file size
add ROMA version check func
add information
development basic function of cluster information
modify some process & value name
undertook to develop test
add some modification
modified source from view to helper