Simplify f-m-p s2i binary format to support other xPaaS images supporting s2i binary builds

f-m-p currently pushes a docker tar format even in openshift s2i mode which is specific to fabric8 images and requires specific handling in openshift s2i assembly.

f-m-p format should be simplified so it is equivalent to "oc start-build --from-file=target/buildArtifact.jar" (or "oc start-build --from-dir=foo/ with foo/bar.jar and other files if necessary to push more than one file)

This way f-m-p would support other openshift s2i images out-of-the-box (e.g. deploying a WAR with an EAP openshift s2i image which already supports "oc start-build --from-file=foo.war"