tree a26e991b0806bc2e123cca9ab992ba19cad30161
parent ae41052a51f5dbb748eb6bf4f23e9145853f4639
author Artom Lifshitz <alifshit@redhat.com> 1632758952 -0400
committer Artom Lifshitz <alifshit@redhat.com> 1634222697 -0400

Add floating IP waiter

In bug 1923194, a floating IP is associated to a server. Upon
performing the operation, Neutron sends Nova a network-vif-changed
external event, causing Nova to update its network info cache. Until
Nova does this, the new floating IP is not reflected in `server show`.
Tempest's `server show` is racing with this process, causing
intermittent failures when the new floating IP does not show up in
`server show` in time.

This patch adds a new waiter that waits for a floating IP to either
appear to disappear in the `server show` output, and modifies two
tests to use the new helper.

Closes bug: 1923194
Change-Id: I0f7e1c9096dc1903903fb31c5e854f07800efbfd