features/quota: Change limit parser to comply with new pattern

Signed-off-by: Varun Shastry <vshastry@redhat.com>
glusterd: remove duplicate functions that crept in post integration

Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
glusterd: ...more cleanup

Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
glusterd: add limit-set option in brick volfile when limit-usage is set

Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>