Test failure: HealthIT.testIfServicesAreDown

[leochr]

One of the test is failing in the CD pipeline. The container image can't be updated as a result.

[INFO] Results:
[INFO] 
[ERROR] Failures: 
[ERROR]   HealthIT.testIfServicesAreDown:45 Response code is not matching http://localhost:9080/health ==> expected: <503> but was: <200>
[INFO] 
[ERROR] Tests run: 2, Failures: 1, Errors: 0, Skipped: 0

[leochr]

The following error is the root cause of the test failure, as per the following logs:

java.io.FileNotFoundException: /workspace/app/sample-getting-started/resources/CustomConfigSource.json (No such file or directory)
	at java.base/java.io.FileInputStream.open([FileInputStream.java:219](http://fileinputstream.java:219/))
	at java.base/java.io.FileInputStream.<init>([FileInputStream.java:157](http://fileinputstream.java:157/))
	at java.base/java.io.FileReader.<init>([FileReader.java:75](http://filereader.java:75/))
	at it.io.openliberty.sample.health.HealthUtilIT.changeProperty([HealthUtilIT.java:68](http://healthutilit.java:68/))

The CustomConfigSource.json was moved recently (in PR #128). The reference to it in the tests should also be changed. I'll open a PR.