cancel bug

[Fedsd1]

A bug in the proxmox module was discovered. When the server is shut down, an error occurs when canceling the service,but in fact the server has been destroyed. When the server is turned on, canceling the service directly does not cause an error. The reason may be that there is no information that was destroyed when the server was shut down. Correctly communicated to blesta.

When the server is powered on and the service is canceled, everything is normal.