Pass DB connection details using file instead of env. variables #8441

Job	Run time
NetBeans on nb-javac	0s
Build Clusters on JDK 11	22m 59s
Build Clusters on JDK 17	11m 48s
Build Clusters on JDK 21-ea	12m 11s
Check Paperwork on Linux/JDK 11	17m 29s
Build NBMs, Source zips and Javadoc on JDK 11	11m 9s
Build-System Test on Linux/JDK 11	1m 47s
Commit Validation on Linux/JDK 11	9m 55s
Commit Validation on Linux/JDK 17	8m 32s
Commit Validation on Linux/JDK 21-ea	7m 24s
IDE Modules on Linux/JDK 11	31m 39s
Build Tools on Linux/JDK ${{ matrix.java }}	0s
APISupport Modules on Linux/JDK 8	7m 32s
Harness, NB and Ergonomics on Linux/JDK ${{ matrix.java }}	0s
Java Modules on Linux/JDK 11	9m 0s
Java Hints ${{ matrix.config }} on Linux/JDK ${{ matrix.java }}	0s
Tests on MacOS/JDK 11	14m 46s
Platform Modules batch1 on Linux/JDK ${{ matrix.java }}	0s
Platform Modules batch2 on Linux/JDK ${{ matrix.java }} (some on 11)	0s
Profiler on Linux/JDK 11	2m 0s
Webcommon Modules on Linux/JDK 11	11m 32s
Enterprise on Linux/JDK 11 (some on 8)	12m 17s
Java Debugger tests on Linux/JDK ${{ matrix.java }}	0s
JavaFX on Linux/JDK 11	2m 38s
DB Tests with MySQL on Linux/JDK 11	3m 15s
PHP on windows-2022/JDK 11	20m 11s
PHP on ubuntu-20.04/JDK 11	12m 40s
Versioning Modules on Linux/JDK 11	5m 29s
Groovy on Linux/JDK ${{ matrix.java }}	0s
Rust on Linux/JDK ${{ matrix.java }}	0s
GraalVM ${{ matrix.graal }} Tests	0s
LSP tests on Linux/JDK 11	6m 1s
VSCode Extension Tests on JDK 11	7m 55s
Cleanup Workflow Artifacts	51s
	4h 11m 0s

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