Update Variable Processing

[dshimo]

#126

• Check compatibility with Maven and Gradle

Maven: https://github.com/dshimo/ci.maven/actions/runs/8377634883
Gradle: https://github.com/dshimo/ci.gradle/actions/runs/8442718868

Tests

• var extraction
  • +: server.xml; boostrap.properties; server.env;
  • -: jvm.options; CLI
• overrides on each level
• overall procedure check
• server.env additional file locations
• jvm.options additional file locations
• environment variable variations lookup
• variables directory
• bootstrap.include (Document link)

Config File Precedence (additional file location support)

• server.env
• jvm.options

New Features

• environment variable variations lookup
  • 3 step lookup
  • lists()
  • Simple arithmetic
• variables directory
• bootstrap.include

[cherylking]

I've only looked at code changes at this point, and not the tests.

[cherylking]

I still need to review the test case and all the test case resources, but I wanted you to have my feedback/questions on the code itself. Sorry it has taken me this long. Crazy busy week.

[cherylking]

I think the tests are good, but it was hard to know for sure. More comments would be great anywhere that you are verifying precedence (explaining where a particular variable was defined and overridden and the various values associated with it).

[cherylking]

just a couple small comments to address