[WIP] Added e2e test info in the main commons repository.

[Preeticp]

Added end to end tests in the Commons repo. This information was part of the Deployment repo here: https://github.com/fabric8-analytics/fabric8-analytics-deployment/tree/master/openshift#e2e-test

[Preeticp]

@tisnik, @msrb I have 3 questions:

1. Please review the second step in the procedure.
   I have changed the text from the original here: https://github.com/fabric8-analytics/fabric8-analytics-deployment/tree/master/openshift#e2e-test
   Please let me know if it needs to be modified.
2. We ask the user to modify the env.sh file, but it is not part of the Commons repo, so we may want to provide a link to it(deployment repo). Or is there any other way to go about it?
3. In addition, we might want to add these instructions to this section:
   $ cp env-template.sh env.sh
   $ vim env.sh
   These instructions are currently here: https://github.com/fabric8-analytics/fabric8-analytics-deployment/tree/master/openshift#configure-fabric8-analytics-services
   WDYT?

[tisnik]

1+2. You can just write: configure the .... variable. It's up to the user how/where to configure it. I use export RECOMMENDER_API_TOKEN=xyz for example

[tisnik]

ACK (but it is very old PR)