[Backport] MAGETWO-61422 Respect Category Top Navigation Max Depth setting

[torhoehn]

Original Pull Request

#12640

Description

The setting Stores > Configuration > Catalog > Catalog > Category Top Navigation > Maximal Depth was actually never being used to limit the top menu maximum depth.

Now the setting will be used as a condition for the category collection when it is fetched.

Fixed Issues

1. Category Top Navigation / Maximal Depth configuration not working #7543: Category Top Navigation / Maximal Depth configuration not working

Manual testing scenarios

1. Change the setting in the backend
2. Refresh the invalidated cache
3. See that the setting actually is being used

Contribution checklist

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds on Travis CI are green)

[m2-assistant]

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[magento-engcom-team]

Hi @orlangur, thank you for the review.
ENGCOM-4716 has been created to process this Pull Request

[VasylShvorak]

✔️ QA passed

[sivaschenko]

Thanks for the backport @torhoehn ! However, the pull request contains several backward incompatible and not suitable for patch upgrade changes (introduced public functions and constructor parameters)

Considering the above, wouldn't backport this change to 2.2-develop branch. Please let me know what you think

cc @orlangur

[sivaschenko]

Adding public methods to API classes in patch releases is prrrohibited by our backward compatibility policy

[sidolov]

@torhoehn , I am closing this PR now due to inactivity.
Please reopen and update if you wish to continue.
Thank you for the collaboration!

[m2-assistant]

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