[16.0][IMP] product_template_tag: add parent tags

[SilvioC2C]

Forward port of #1504

EDIT: some tests seem to be failing for reasons unrelated to this PR, as they are also currently failing on branch 16.0.

[OCA-git-bot]

Hi @ivantodorovich, @patrickrwilson,
some modules you are maintaining are being modified, check this out!

[gurneyalex]

/ocabot merge minor

[OCA-git-bot]

On my way to merge this fine PR!
Prepared branch 16.0-ocabot-merge-pr-1505-by-gurneyalex-bump-minor, awaiting test results.

[OCA-git-bot]

@gurneyalex your merge command was aborted due to failed check(s), which you can inspect on this commit of 16.0-ocabot-merge-pr-1505-by-gurneyalex-bump-minor.

After fixing the problem, you can re-issue a merge command. Please refrain from merging manually as it will most probably make the target branch red.

[simahawk]

tests fixed. Rebase pls

[legalsylvain]

/ocabot rebase

[OCA-git-bot]

@legalsylvain The rebase process failed, because command git push --force camptocamp tmp-pr-1505:16.0-IMP-add_product_tmpl_tag_parent failed with output:

remote: Permission to camptocamp/product-attribute.git denied to OCA-git-bot.
fatal: unable to access 'https://github.com/camptocamp/product-attribute/': The requested URL returned error: 403

[legalsylvain]

need rebase.

[github-actions]

There hasn't been any activity on this pull request in the past 4 months, so it has been marked as stale and it will be closed automatically if no further activity occurs in the next 30 days.
If you want this PR to never become stale, please ask a PSC member to apply the "no stale" label.

[legalsylvain]

/ocabot merge minor

[OCA-git-bot]

This PR looks fantastic, let's merge it!
Prepared branch 16.0-ocabot-merge-pr-1505-by-legalsylvain-bump-minor, awaiting test results.

[OCA-git-bot]

Congratulations, your PR was merged at 1d74d1b. Thanks a lot for contributing to OCA. ❤️