Avoid false positive for VG activation

When lvm.conf file has volume_list parameter configured and the
cluster is managing the shared storage using system_id_source,
then the activation of the LV fails to happen. However it is
reported as a success.

The fixes will avoid starting of LVM-activate resource when
the cluster is configured with both system_id_source and
volume_list.

Signed-off-by: Arslan Ahmad <arslan.ahmad97@googlemail.com>