We're trying to get nova to talk to ironic through openstacksdk and need
to be able to specify retry limits/intervals there. We could reuse the
existing conf options, but better to support the standard ones exposed
from keystoneauth1 via [1] and [2].
Note that these will be ignored unless you have keystoneauth1 3.15.0
(for [1]) or 3.16.0 ([1] and [2]) and are building your adapter using
ksa-derived conf options (see the Needed-By).
Needed-By: https://review.opendev.org/642899
[1] https://review.opendev.org/#/c/666287/
[2] https://review.opendev.org/#/c/672930/
Change-Id: I79c416e25d635b0ffa419640b4bd91e36f78b1ab
e273c0433f