[Backport] Using interface instead of model directly

[mage2pratik]

Original Pull Request

#17124
#17263

Description

Using interface instead of model directly

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)

[sidolov]

@magento-engcom-team combine 17263

[magento-engcom-team]

Hi @sidolov. Thank you for your request. I'm working on combining the pull requests for you

[magento-engcom-team]

@mage2pratik all pull requests have been successfully combined together:

• merged [Backport] #17163: Add meta NOINDEX,NOFOLLOW to admin scope to avoid accidental crawling #17263: [Backport] Add meta NOINDEX,NOFOLLOW to admin scope to avoid accidental crawling #17163: Add meta NOINDEX,NOFOLLOW to admin scope to avoid accidental crawling

[magento-engcom-team]

Hi @mage2pratik. Thank you for your contribution.
We will aim to release these changes as part of 2.1.15.
Please check the release notes for final confirmation.