Add support for MAVEN_PROJECTBASEDIR substitution (backport of MNG-8598)

[mguillem]

This backports the changes from [MNG-8598] without integration tests as the setup for them doesn't exist here.

See #2194, #10140

Following this checklist to help us incorporate your
contribution quickly and easily:

• Your pull request should address just one issue, without pulling in other changes.
• Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
• Each commit in the pull request should have a meaningful subject line and body.
  Note that commits might be squashed by a maintainer on merge.
• Write unit tests that match behavioral changes, where the tests fail if the changes to the runtime are not applied.
  This may not always be possible but is a best-practice.
• Run mvn verify to make sure basic checks pass.
  A more thorough check will be performed on your pull request automatically.
• You have run the Core IT successfully.

If your pull request is about ~20 lines of code you don't need to sign an
Individual Contributor License Agreement if you are unsure
please ask on the developers list.

To make clear that you license your contribution under
the Apache License Version 2.0, January 2004
you have to acknowledge this by using the following check-box.

• I hereby declare this contribution to be licenced under the Apache License Version 2.0, January 2004

[mguillem]

@gnodet can you provide some information on the failed tests? As far as I can see it, they don't belong to the target branch therefore I don't understand why they are executed.

[gnodet]

@gnodet can you provide some information on the failed tests? As far as I can see it, they don't belong to the target branch therefore I don't understand why they are executed.

The Maven 3 ITs are available in https://github.com/apache/maven-integration-testing/tree/maven-3.9.x