Following CLI interface changes are implemented:
1) update share type quotas:
$ manila quota-update ... --share-type %share_type_name_or_id% ...
2) get share type quotas:
$ manila quota-show ... --share-type %share_type_name_or_id% ...
3) delete/reset share type quotas:
$ manila quota-delete ... --share-type %share_type_name_or_id% ...
'quota-defaults' stays unchanged as it is the same for all kinds of
quotas - project, user or share type.
Implements BluePrint support-quotas-per-share-type
Change-Id: I0cd2bc41193e50b330456b14c5f66134a513cc32