INTLY-2346 openshift 4 support

@philbrookes Would you mind having a quick review of this? I will also add OpenShift 4 verification steps in the morning.

I still need to confirm OpenShift 3 backwards compatibility is working as expected.

OpenShift 4 Verification

Have an existing OpenShift 4 cluster with Integreatly setup
Run oc status, note the api.<my-cluster> URL
In the solution explorer Namespace, update the tutorial-web-app DeploymentConfig:
- Update the image to docker.io/aidenkeatingrht/tutorial-web-app:INTLY-2346
- Add an env var called OPENSHIFT_API with the value of the api.<my-cluster> from earlier
- Add an env var called OPENSHIFT_VERSION with the value '4'
Wait for the DeploymentConfig to redeploy
Wait for the webapp to become available, you can check the logs of the Pod
Go into the webapp URL and start Walkthrough 1A (AMQ Online, Fuse Online)
Ensure
- Fuse Online starts provisioning
- AMQ Online starts provisioning
Once the two services have provisioned, ensure
- The walkthrough tasks show as expected
- Fuse Online is accessible through the various links in the Walkthrough
- AMQ online is accessible through the various links in the Walkthrough
Note that there will be missing crud app URL's as that relies on a separate PR being merged
Go to the homepage of the webapp
Ensure AMQ Online on the right-hand side shows itself as available, click it and ensure it brings you to the AMQ Online console

Have an existing OpenShift 3 cluster with Integreatly installed on it
If using 1.4.1 release of Integreatly
- Ensure managed-service-broker is updated to use tag greater or equal to v0.0.9
- Ensure managed-service-broker has USER_SSO_URL env set to the user sso route
Update the webapp to use image docker.io/aidenkeatingrht/tutorial-web-app:INTLY-2346
Open the webapp, ensure services load as expected
Do walkthrough 1A, ensure it works as expected