Merge pull request #78 from mattyb149/add-test-resources

[TESTING]: Add PDI SuperJob and PME test helpers
Merge pull request #80 from mattyb149/add-test-resources

[TESTING]: Replace hardcoded hostnames in PDI jobs with variables
PDI-11463: Add cdh50 shim with SNAPSHOT artifacts
Merge pull request #81 from mattyb149/PDI-11463

PDI-11463: Add cdh50 shim with SNAPSHOT artifacts
[TESTING]: Add README and update job.properties for Oozie