Do not mount /etc/passwd and /etc/group files

[zioproto]

Description

The goal is of this volume mount was to translate usernames from ids. However this is not really necessary, and exposes the full content of the passwd and group file from the host to the container. Moreover, on systems like MacOS where docker runs into an internal Linux VM, the content of the file /etc/passwd is completely irrelevant.

Type of Change

• [ ] Non-module change (e.g. CI/CD, documentation, etc.)
• [ ] Azure Verified Module updates:
  • [ ] Bugfix containing backwards compatible bug fixes
  • [ ] Someone has opened a bug report issue, and I have included "Closes #{bug_report_issue_number}" in the PR description.
  • [ ] The bug was found by the module author, and no one has opened an issue to report it yet.
  • [X] Feature update backwards compatible feature updates.
  • [ ] Breaking changes.
  • [ ] Update to documentation

Checklist

• [X] I'm sure there are no other open Pull Requests for the same update/change
• [x] My corresponding pipelines / checks run clean and green without any errors or warnings
• [x] I did run all pre-commit checks