Clean up user audit list

[jameshochadel]

Related: cloud-gov/product#2490

Changes proposed in this pull request:

• @pburkholder it's unclear to me if this is in use, since it was so out of date; can you give any insight?
• Add Chris M and align list with current staff

Things to check

• For any logging statements, is there any chance that they could be logging sensitive data?
• Are log statements using a logging library with a logging level set? Setting a logging level means that log statements "below" that level will not be written to the output. For example, if the logging level is set to INFO and debugging statements are written with log.debug or similar, then they won't be written to the otput, which can prevent unintentional leaks of sensitive data.

Security considerations

Possibly affects compliance auditing of IaaS admins.

[rcgottlieb]

If this is being used, Drew Bollinger may need to be added, otherwise looks good.

[markdboyd]

Superseded by #269