Rename modules os to cm_os and std to cm_std

[pj892031]

Proposed changes

This PR renames two modules (os > cm_os, std > cm_std). It is for the implementation of zowe/zowe-install-packaging#3352. Modules os and std were clashing with the default implementation of the node. It was not possible to establish a unit tests in the ZWE command.

Cannot be achieved: The PR also replaces the representation of string values in the config manager to be readable for the developer (because makefile uses C89 and it doesn't support IBM pragma convert).

This PR depends upon the following PRs:

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Change in a documentation
• Refactor the code
• Chore, repository cleanup, updates the dependencies.
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

PR Checklist

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• If the changes in this PR are meant for the next release / mainline, this PR targets the "staging" branch.
• My code follows the style guidelines of this project (see: Contributing guideline)
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• New and existing unit tests pass locally with my changes
• video or image is included if visual changes are made
• Relevant update to CHANGELOG.md
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works, or describe a test method below

Testing

Further comments

[pj892031]

tested in zowe/zowe-install-packaging#3388

[JirkaAichler]

Looks good!

[JoeNemo]

Looks good.