License derived from .baseline/copyright

[dansanduleac]

Before this PR

Enforcing copyright file using checkstyle which is hard to change and not in sync with whatever files are in .baseline/copyright.

After this PR

==COMMIT_MSG==
Enforcing copyright based on the first file (lexicographically) founds in .baseline/copyright.

This now uses spotless, which means that we can now autofix all copyrights using gradle.

It also allows us to enforce this copyright on groovy files, which we didn't have before.
==COMMIT_MSG==

Possible downsides?

• the copyright at the top of all (java, groovy) files must be identical (except the year) or else it will get rewritten
• it might make it more difficult to deal with copied files that had another license already on them
  • can deal with it by having two comments, the standard repo one, and then another one with the original attribution

[changelog-app]

Generate changelog in changelog/@unreleased

Type

• Feature
• Improvement
• Fix
• Break
• Deprecation
• Manual task
• Migration

Description

Enforcing copyright based on the first file (lexicographically) founds in .baseline/copyright.

Check the box to generate changelog(s)

• Generate changelog entry

[iamdanfox]

Looks cool, might be worth a mention in the README that the copyright directory is important, and that running ./gradlew spotlessApply should fix things :)

[iamdanfox]

./gradlew format feels a bit odd here. I think I'd almost recommend spotlessApply here

[dansanduleac]

Isn't it the same thing though?

[dansanduleac]

Recommending another command that format intentionally aliases feels like it might confuse people.

[iamdanfox]

So running this internally on sls-logging, it seems it currently wrecks the world (and replaces our internal shorthand license with the apache one, which isn't correct). Think we need to:

• ensure this task tolerates any of the templatets in the .baseline/copyright dir
• prefers the highest prefix (not lowest)
• probably update excavator to delete the apache license template from internal repos (as internal code is not apache license by default!)