In case of v2.1, update quota_set response contain 'id' which does
not match with V2 response.
These new attributes are found during tempest testing by blocking
additional properties in schema -
https://etherpad.openstack.org/p/Removal_new_attribute_V2_1
V2.1 must be identical with V2 and must not contain any new attributes in
response. This commit removes this extra attributes from V2.1 API.
Partially implements blueprint v2-on-v3-api
Change-Id: I7d1d03fadd1eaf90d9e37eb4f1dc330770f9ace9
e511410188