Added option to sync vm config via csync2

When save_config_on_stop AND sync_config_on_save is enabled the config gets synced with csync2 -x vm.conf to all nodes configured in csync2. This will make sure that wherever the VM starts it will inherit the config changes.

Also, we need some sort of error/warning message output if csync fails.  That error doesn't need to cause the 'stop' action to fail,  we just need to know something bad happened.