Add integration test for Oracle and Batch 5 (Boot 3)

[onobc]

Issue #5534 highlighted the fact that we are not testing a Batch5 (Boot 3) running against Oracle.

We need to add this.

[onobc]

@felipeg48 is working on this one.

[corneil]

Oracle Integration testing will be a nightmare without the driver embedded in the application jars.
We will need to:

• Pull the dataflow, skipper and all task based containers
• Build new containers with the oracle driver added
• Push those to a private container registry
• Ensure the clusters for testing will use the registry instead of docker hub.

[corneil]

For the momemnt we have a collection of tests that do execute against Oracle with testcontainers and can be extended to cover more cases.

[onobc]

The idea is to sanity test against Oracle and Batch 5 (which we do not have coverage for currently).

I think we would only need to get the Oracle drivers into 1 sample app (timestamp-batch). The same way that we have a boot2 and boot3 version of the apps in SCDF-samples, we would need to add a boot3-oracle app. Then we would need to install it to a private registry rather than hub.docker.com.