Gate fix and update compute tests to adopt new policies

Nova is moving to new policy defaults in ussuri[1] where
few polciies are made more granular to adopt the new defaults.

With granularity in few policies make change in policy name so
we have update the patrole tests to start checking against the
new policy names from ussuri onwards.

This commit updates the security group and server password
policy tests to move to new policies from ussuri onwards.

Also add the already fixed instance action policy in reno

Also fix the gate to parse the combining of deprecated rule
check_str with oslo policy parser instead of string processing.

Story: #2007585
Task: #39516

[1] https://specs.openstack.org/openstack/nova-specs/specs/ussuri/approved/policy-defaults-refresh.html

Change-Id: If661299231d548ce40a2e340b1ddb9ebe8d3f964
4 files changed