E2E: Create Wildfly Swarm tests

[manusa]

Description

Create E2E tests to verify Wildfly Swarm generator works as expected.

Specific verifications:

• Docker Image contains ENV variable AB_PROMETHEUS_OFF

Tasks

• Create new package wildflyswarm in https://github.com/jkubeio/jkube-integration-tests/tree/master/it/src/test/java/org/eclipse/jkube/integrationtests
• Create test for Kubernetes
• Create test for OpenShift
• Create Wildfly Swarm project in https://github.com/jkubeio/jkube-integration-tests/tree/master/projects-to-be-tested (use Vert.x or Thorntail projects as reference)
• Configure pom.xml to run the tests in the other profile

References

• http://www.mastertheboss.com/jboss-server/wildfly-swarm/getting-started-with-wildfly-swarm
• https://www.phillip-kruger.com/post/hollowjars_deploymentscanner_and_why_wildflyswarm_is_cool/

cc: @anandrkskd