Tests for nova unified quotas

This adds a sequence of unified limit updates and verifications of
enforcement for servers, vcpu, ram, and disk. This is safe to run in
parallel with other tests because only project scoped limits are being
tested in this scenario.

Related to blueprint unified-limits-nova

Change-Id: I37d3896a037e2d4d1004abc52f6e93fd0025f981
1 file changed