Tycho-its reproducer for issue 2716.

[dhendriks]

See

• "'build.plugins.plugin.version' for org.codehaus.mojo:build-helper-maven-plugin is missing" in case of multiple source directories #2716
• "'build.plugins.plugin.version' for org.codehaus.mojo:build-helper-maven-plugin is missing" in case of multiple source directories #2717

[github-actions]

Test Results

   564 files  +3     564 suites  +3   5h 3m 30s ⏱️ - 12m 35s
   362 tests +1     355 ✔️ +1    6 💤 ±0  0 ❌ ±0  1 🔥 ±0 
1 086 runs  +3  1 064 ✔️ +1  19 💤 ±0  0 ❌ ±0  3 🔥 +2 

For more details on these errors, see this check.

Results for commit 0827d42. ± Comparison against base commit 57f0ce6.

[dhendriks]

The build fails, as expected, since the reproducer is meant to show the issue.

[laeubi]

@dhendriks as mentioned in the discussion this can be fixed by adding a managed plugin the the main pom.
If you think it should be testes please adjust your test-case with that and let me know so I can reopen the PR.