Change ownership of /var/tmp/packstack if it is possible

Change-Id: Id0fd6ab11f7ddab527dc2791b8d8733f974b3377
Fixes: rhbz#920516
Synchronize time using all ntp servers

Change-Id: I7e427ab1a242ce6e90b26a5e2fde4f981c04da0d
Fixes: rhbz#956939
Merge "Change ownership of /var/tmp/packstack if it is possible"
Merge "Synchronize time using all ntp servers"