This change follows up on the previous performance improvements
and does the same for crud requests.
I9d67f0966561baaefb50ae97b943ff6593e194eb
I32328c5206b9cd6fb8d8764c079f22b6ea8bfa9e
We remove from_sqlalchemy_model and the related object intermediary
representation from the get_loabalancer, get_pool, get_listener,
get_healthmonitor, get_l7policy, get_l7policy_rule,
get_pool_member.
Instead it more directly transforms from the SQLAlchemy model to the
required api dictionary format. Thus this entirely skips loading a few
relations that walking the intermediary object model triggered without
the target output needing them.
This is in particular important on calls like _get_driver_for_loadbalancer
as it previously would load the loadbalancer and all related objects
just to get the provider name for the loadbalancer.
Story: 2004949
Task: 29365
Change-Id: Ic268ea3cdcf809f62ba1ab3ebf8ab6d22f871404
0295eccea6