virtlockd: fix systemd unit file dependancies

After deploying virtlogd by default we identified a number of
mistakes in the systemd unit file. virtlockd's relationship
to libvirtd is the same as virtlogd, so we must apply the
same unit file fixes to virtlockd
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

daemon/libvirtd.service.in

@@ -6,6 +6,7 @@
 [Unit]
 Description=Virtualization daemon
 Requires=virtlogd.socket
+Requires=virtlockd.socket
 Before=libvirt-guests.service
 After=network.target
 After=dbus.service

src/locking/virtlockd.service.in

 [Unit]
 Description=Virtual machine lock manager
 Requires=virtlockd.socket
+Before=libvirtd.service
 Documentation=man:virtlockd(8)
 Documentation=http://libvirt.org
 

src/locking/virtlockd.socket.in

 [Unit]
 Description=Virtual machine lock manager socket
+Before=libvirtd.service
 
 [Socket]
 ListenStream=@localstatedir@/run/libvirt/virtlockd-sock