Make Strimzi testing framework able to execute tests on remote cluster

Since we have option to run systemtests on Openshift EE we have to update our framework with option to use remote cluster. This should be done via change context for oc client: https://docs.openshift.com/container-platform/3.11/cli_reference/manage_cli_profiles.html

There is a change, that we just need to switch context for oc client and remove system:admin user from our framework and everything will be fine. -> investigate this.

Make sure that you are not using system:admin