Ensure other volumes are being scanned

cinder-volumes vg wasn't scanned because the filter didn't include anything, just excluded cinder-volumes and everything else.

- add all volume and then exclude the volume group in the filter

Issue rcbops/chef-cookbooks#903

(cherry picked from commit 70940270395f6b91bc09e42c263b67e06e89dc47)
Merge pull request #99 from claco/v4.2.3rc

Merged automatically by jenkins after successful build test