Extend server schema for extended volume attribute

extended volume attribute adds the 'id' in
'os-extended-volumes:volumes_attached' but JSON schema only check
the type array.

We should check 'id' with additional property false. Because v2.3
version adds another attribute in this response which can be strongly
verified on previous versions.

Change-Id: Icf6148017cdbc4f48d3ef9a964ee39fedda72b4e
1 file changed