[Task] Update fabric8-client to 5.5.0+ and remove KUBERNETES_AUTH_TRYKUBECONFIG_SYSTEM_PROPERTY

[andrewazores]

I figured it out. There is an OkHttp Interceptor added in the DefaultOpenShiftClient to retry requests that fail authorization by finding a token or asking the server for a new one:
https://github.com/fabric8io/kubernetes-client/blob/7e747ca61c0097562622eb53b9f008cc6d5e82fb/openshift-client/src/main/java/io/fabric8/openshift/client/internal/OpenShiftOAuthInterceptor.java

There's a special case for RBAC review objects since these can return 200 or 201 even when unauthorized. These are set to always retry. As a consequence, I believe each SelfSubjectAccessReview will be sent twice unfortunately. This request doesn't get resent if there is no username/password or token in the OpenShiftConfig object, which should be the case in our tests, but not in practice.

The difference we're seeing between 5.4.1 and 5.6.0 is due to this PR: fabric8io/kubernetes-client#3158. The test was failing because the OpenShiftClient found a token to use within our ~/.kube/config. If you rename that file, the test will pass.

Originally posted by @ebaron in #599 (comment)

[andrewazores]

Downstream builds currently have 5.4.1 as the latest version, though 5.6.0 is available for upstream. Once 5.5.0+ is available downstream then this issue should be addressed.