Kill child process when shutdown.
Add AMQ_AUTH_FILE.
Update cache area param for ASO.
check voms- exec
Merge pull request #4674 from HassenRiahi/AddASOCacheAreaParam

Update cache area param for ASO.
Merge pull request #4658 from HassenRiahi/AddAmqAuthFileParam

Add AMQ_AUTH_FILE.
Merge pull request #4632 from HassenRiahi/KillChildProcessWhenShutdown

Kill child process (entire process group) when shutdown.
Merge pull request #4680 from spigad/master

check voms-proxy-init executable exists