Adding atscfg overrides to insert the Release version in via string

[ezelkow1]

What does this PR (Pull Request) do?

The release version can be a user definable build option of ATS, instead of the actual ATS version number. So being able to set this as the via string can be useful for both debug to get a specific build value that was in use as well as obfuscation of the ATS version in use

This also adds atscfg and ort command line options for both the release version via string as well as a previous option
to disable per line comments in parent.config

Which Traffic Control components are affected by this PR?

• CDN in a Box
• Traffic Ops ORT

What is the best way to verify this PR?

Run atstccfg with the --via_string_release option, or set that as an option in the crontab for ciab. Then check the via string output from a cache request in the headers and verify that it now shows the release value from the rpm instead of the ATS version

If this is a bug fix, what versions of Traffic Control are affected?

The following criteria are ALL met by this PR

• This PR includes tests OR I have explained why tests are unnecessary
• This PR includes documentation OR I have explained why documentation is unnecessary
• This PR includes an update to CHANGELOG.md OR such an update is not necessary
• This PR includes any and all required license headers
• This PR DOES NOT FIX A SERIOUS SECURITY VULNERABILITY (see the Apache Software Foundation's security guidelines for details)

Additional Information

[rob05c]

Looks good! Code looks good. I tested, worked as expected. Ran ORT as before, didn't insert via strings. Ran with --via_string_release, ATS version was added to records.config, requested ATS, observed ATS yum version in via header in response.