Med: More cleanups for whitespace in output in HA LVM

Clean up a few more places where we call lvs or vgs -o tags
to strip whitespace before we check for blank output.

Reviewed-by: Lon Hohberger <lhh@redhat.com>
Reviewed-by: Frank Danapfel <fdanapfe@redhat.com>
Signed-off-by: Ryan McCabe <rmccabe@redhat.com>