Resolve a few nitpicks about direct communications to Openshift API

Thank you @knikolla for pointing out a few places to improve the code: https://github.com/nerc-project/coldfront-plugin-cloud/pull/205#discussion_r2067506504, https://github.com/nerc-project/coldfront-plugin-cloud/pull/205#discussion_r2067503943, https://github.com/nerc-project/coldfront-plugin-cloud/pull/205#discussion_r2067493980