(hotfix v11.0) Hotfixes for v11.0

Version Control Information

Source branch: hotfix/v11.0/hotfixes-v11 Target branch: release/v11.0

Commits:

* fix execute permission of v11-01-yaml-hosts.sh file

In !1714 (93ea1b4f), we introduces the YAML-based approach for Ansible
hosts file.

This commit changes the execute permission for the
`release-migrations/v11-01-yaml-hosts.sh` script and allowing it to
remove obsolete state files during release migration.

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Fixes-up: !1714 (merged)
Fixes-up: !1943 (merged)
Related-hotfix: !2188 (merged) (devel)

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Merge Prerequisites

• MR title (and description) are descriptive
• Code is readable and syntactically correct
• Code is understandable
• Documentation has been updated, if necessary
• Commit messages look good
• Release note file in RST format added in latest commit

As a developer: please do not tick these boxes yourself. As a reviewer: please get yourself a hot cold beverage.