Description

We previously had a periodic test, but that was removed as part of https://github.com/openshift/release/pull/57610/files#diff-56cbac794f484f9162db37da242a1111a6991e752f27e7c79093d7252368ddd7

That test did not do a full cluster upgrade, instead it installed a 4.16 operator on a 4.18 cluster, and then attempted to upgrade. As this is a major feature we need to make sure we are testing this properly.

Acceptance Criteria 

• 4.18 -> 4.20 full cluster upgrades with multiple Windows workers run periodically.