chore(bake): refactor linux_tags function

[lemeurherve]

This PR refactors linux_tags function by reducing* the cases in that function by using distribution instead of hardcoded distribution names. (330b515)

It also removes duplicated debian_variants function, and uses new is_<distribution> functions in the platforms one for readability.

*: a bit, there are still inconsistencies between distribution tags that need to be taken care of.

Amends:

• chore: define JDKs to build at a single place in docker bake #2142

Testing done

make test

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