adjust memory quota test allows for other users to be present

[kewalaka]

This test:

https://github.com/dev-sec/windows-baseline/blob/c093ac4531631236e09972d31f606c682e17ff54/controls/user_rights.rb#L41-L50

..currently allows for other users to be present. This is potentially necessary, if the server is a web server or SQL server, but is not secure by default, as any user can be arbitrarily added?

[atomic111]

@kewalaka can you add a new variable within the baseline?

[imjoseangel]

This issue can be closed. This has been fixed in https://github.com/dev-sec/windows-baseline/pull/44