[Labs-l] Passwordless sudo on all instances

[Andrew Bogott]

I've just made a few changes to the way sudo is handled in labs. Most 
users will only notice the first one:

1)  Password-free:  anyone who had sudo rights before will still have 
them, but now sudo commands will execute immediately without first 
prompting for a password.

2)  Default policies:  Newly created projects will automatically have a 
permissive sudo policy that provides sudo rights for all project members 
and all commands.

3)  No more 'ALL' users:  The user group named 'ALL' has been replaced 
by the slightly-more-secure 'All project members.'

If you are a project sysadmin and find #1 alarming, it's easy to turn 
passwords back on.  Visit 
https://labsconsole.wikimedia.org/wiki/Special:NovaSudoer -- 
passwordless sudo is reflected by the "!authenticate" option.  To 
require passwords for a given policy, click the 'modify' link and then 
check the 'require authentication' box on the following page.

Please let me know if you find any breakage with these changes!

-Andrew