Currently we have workloads that create Octavia load balancers and
pools.
For cleanup purpose there are two rally resource classes. Load balancer
cleanup class calls Octavia API to delete load balancer in cascade mode
which should remove pools as well.
Pools cleanup class does the same - calls to list and remove load
balancers, not pools itself.
This patch fixes this issue (pools cleanup class operates octavia pools
resources).
Also
* proper is_deleted check is added for Octavia resources
* handle the case when load balancers resource is in PENDING_DELETE
state
* added cleanup resource classes for octavia listeners, l7polices and
health monitors
Change-Id: I83e53a023b76e5029108946c7468448ce8c46f50
1ebcb928a1