Handle "paused" VM state for up and halt actions

[legal90]

At the moment VM could not be started/stopped/deleted if it is in :paused state (don't mix it up with :suspended). prlctl doesn't allow that by some reason:

$ prlctl stop paused-vm-name
Stopping the VM...
Failed to stop the VM: Unable to complete the operation. This operation cannot be completed because the virtual machine "paused-vm-name is in the "paused" state.

$ prlctl delete paused-vm-name
Removing the VM...
Failed to remove the VM: Unable to perform the action because the virtual machine is busy. The virtual machine is currently running. Please try again later.

This PR fixes the related issue - the VM will be resumed before the halt action. Also, on the up action it will be just resumed to avoid further errors while redundant re-configuration.