Extend source-java-jdbc by files required for SAT SPEC (Example #18779)

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Tell us about the problem you're trying to solve

We integrated SAT SPEC into the Java sources in PR #18779.
We need to update our source-java-jdbc module to generate these files in the new java source connectors by default.

We use a Node.js lib (plop) to generate a new connector:

• add SAT file (*.yaml)
• update build.gradle
• add acceptance.py (integration test folder) - needed to run SAT on CI (or python script)
• docker shell file for acceptance

In CI, we generate a new scaffold connector. Update this Gradle test as well. Look for the README template