[Fixes #6952] Layer UUID handler

[mattiagiupponi]

Resolves issue 6952 by introducing a hook for manage the uuid
Documentation PR

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[cla-bot]

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[afabiani]

@mattiagiupponi ok with the implementation, missing a couple of things:

1. A smoke test that demonstrate the hook of the UUID and how it works
2. The title of the PR must be changed like [Fixes #6952] Layer UUID handler

[afabiani]

@mattiagiupponi please ignore my comments about the failing test, I guess I found the culprit.

[mattiagiupponi]

@afabiani Do you mean the test in the Thesaurus pr? (#6951)

[afabiani]

@mattiagiupponi yes, sorry

[cla-bot]

Thank you for your pull request and welcome to our community. We require contributors to sign our Contributor License Agreement, and we don't seem to have the users @allyoucanmap on file. In order for us to review and merge your code, please contact the project maintainers to get yourself added.

[mattiagiupponi]

@mattiagiupponi ok with the implementation, missing a couple of things:

1. A smoke test that demonstrate the hook of the UUID and how it works
2. The title of the PR must be changed like [Fixes #6952] Layer UUID handler

@afabiani thanks for the comments, I have just pushed the changes requested.

• Smoke test added here, it's just a simple test to show how the custom uuidhandler will take care of updating the UUID on pre-save method.
• Title of the issue updated

[afabiani]

We have two constant test failures which are not related to this PR, so, merging for time being. We will need to spot those failures on a dedicated branch.

[cla-bot]

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