[v5.1.7-alpha2] User agent and access key environment key support

Note:

• This is an alpha pre-release : It has not been fully vetted by our QA team, and may have unexpected errors.
• For windows, please use powershell instead of the cmd terminal to avoid common formatting issues
• For macos, you will need to manually "right-click" and "open" one time to grant it the needed OS permissions.

New Features / Fixed Issues in the current build:

• Added the --userAgent support (chrome only) for test run via CLI
• Added the option to pass the access key via UILICIOUS_ACCESSKEY, instead of a param on the CLI
• Fix a bug in error handling for expired accounts, and several other failure modes, which the CLI would have looped on
• (the previous -alpha build had regression issues, -alpha2 fixes them)