Pip bugfix

[alikhanxgrid]

XkOps

Issue

https://github.com/XgridInc/xkops/issues/36

Description

This PR fixes the issues of pip3 not installing in rb-preflight

Checklist

• [ ] Added tests that cover your change (if possible)
• [ ] Added/modified documentation as required (such as the README.md, or the docs directory)
• [x] Manually tested
• [x] Made sure the title of the PR is a good description that can go into the release notes (if applicable)
• [x] Every function, interface, class has a comment describing what it does and input/output parameters

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Files not summarized due to errors (1)

### Failed to summarize * src/pre-flight/rb-pre-flight/rb-preflight.sh (nothing obtained from openai)

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In the recent run, only the files that changed from the base of the PR and between 019925f8fbda31202435df1273aff239a3816cc6 and 3036aeb86a5a5d776625ce093d5efefce31a825e commits were reviewed.

Files not reviewed due to errors in the recent run (1)

### Failed to review in the last run * src/pre-flight/rb-pre-flight/rb-preflight.sh (no response)