The following functions are used locally in e2e framework subpackages.
- RunSSHCommandViaBastion
- MakeNginxPod
- LogPodTerminationMessages
- CheckPodsCondition
- SetNodeAffinityRequirement
This renames them to clarify them as local ones.
The framework/ssh.go code was heavily used throughout the framework
and could be useful elsewhere but reusing those methods requires
importing all of the framework.
Extracting these methods to their own package for reuse.
Only a few methods had to be copied into this package from the
rest of the framework to avoid an import cycle.
