Check for leaked server resource allocations in post_test_hook
Check for leaked server resource allocations in post_test_hook

The post_test_hook.sh runs in the nova-next CI job. The 1.0.0
version of the osc-placement plugin adds the CLIs to show consumer
resource allocations.

This adds some sanity check code to the post_test_hook.sh script
to look for any resource provider (compute nodes) that have allocations
against them, which shouldn't be the case for successful test runs
where servers are cleaned up properly.

Change-Id: I9801ad04eedf2fede24f3eb104715dcc8e20063d

mahak/nova,openstack/nova,mikalstill/nova,klmitch/nova,klmitch/nova,openstack/nova,rahulunair/nova,gooddata/openstack-nova,mikalstill/nova,rahulunair/nova,phenoxim/nova,rahulunair/nova,gooddata/openstack-nova,mikalstill/nova,openstack/nova,klmitch/nova,gooddata/openstack-nova,klmitch/nova,phenoxim/nova,mahak/nova,mahak/nova,gooddata/openstack-nova