Improve Spring Boot quickstarts to enlighten standalone/OpenShift deployment mode

Several Quickstarts are available to show usage of Spring Boot in https://github.com/fabric8-quickstarts . They are all configured to be deployed on Kubernetes/OpenShift even if they are working in standalone mode. Based on mail discussion, the idea is to not provide specific standalone example. The Kubernetes/OpenShift code is currently mixed with the standalone configuration. In order to help users to understand what they need/don't need in standalone mode, it would nice to have a better separation.

Proposals and questions:

• have a specific OpenShift profile
• modify readme to mention the difference and that both are fine as deployment
• What about Arquilian tests? They are not making sense in standalone mode. Do we need to provide different ones?
• Are they also some examples that are specific to Kubernetes/OpenShift and not working in standalone?