Use systemctl rather than service to restart gpumon
Use systemctl rather than service to restart gpumon

Signed-off-by: John Else <37b74501daa612e48fea94f9846ed4ddeb6a8f07@citrix.com>

thomassa/xen-api,euanh/xen-api,srowe/xen-api,thomassa/xen-api,thomassa/xen-api,rafalmiel/xen-api,euanh/xen-api,srowe/xen-api,srowe/xen-api,thomassa/xen-api,srowe/xen-api,euanh/xen-api,rafalmiel/xen-api,Frezzle/xen-api,euanh/xen-api,rafalmiel/xen-api,srowe/xen-api,thomassa/xen-api,Frezzle/xen-api,rafalmiel/xen-api,rafalmiel/xen-api,thomassa/xen-api,rafalmiel/xen-api,euanh/xen-api,Frezzle/xen-api,euanh/xen-api,Frezzle/xen-api,Frezzle/xen-api