remote: use Wants instead of Requires for libvirtd sockets

To facilitate upgrades from earlier versions of libvirt which did not
use socket activation for libvirtd, we want to allow the libvirtd socket
units to be disabled (masked). This can only be supported if we use the
weaker Wants statement instead of Requires.
Reviewed-by: NJán Tomko <jtomko@redhat.com>
Signed-off-by: NDaniel P. Berrangé <berrange@redhat.com>

src/remote/libvirtd.service.in

@@ -2,9 +2,12 @@
 Description=Virtualization daemon
 Requires=virtlogd.socket
 Requires=virtlockd.socket
-Requires=libvirtd.socket
-Requires=libvirtd-ro.socket
-Requires=libvirtd-admin.socket
+# Use Wants instead of Requires so that users
+# can disable these three .socket units to revert
+# to a traditional non-activation deployment setup
+Wants=libvirtd.socket
+Wants=libvirtd-ro.socket
+Wants=libvirtd-admin.socket
 Wants=systemd-machined.service
 Before=libvirt-guests.service
 After=network.target