* do not unlink $pidfile inside stop_running_backups to avoid race conditions
* use pve UPID to save pid (see PVE::Tools::upid_decode)
* allow to pass -stop parameter to nomal backup job
* simple return 'OK' instead of calling exit() inside API call.
* rename stop_all_backups to stop_running_backups
This fix include a new function of vzdump.
Now you can call vzdump -stop and the backup will be aborted.
Also if the pve-manager init script stop the process, vzdump -stop will called.
Signed-off-by: Wolfgang Link <wolfgang@linksystems.org>
