Just run the install_puppet/modules scripts.

They have an x bit set and a shebang line, there is no need to specify
bash explicitly.

Change-Id: Ide8d0389c42d4ab256be3c0f6bdfcfcee621982b
Fix semantic error in example config.

The user list is meant to be a list, not a literal.

Change-Id: I56fe64660c4a45aacdab7c4b2454d46ce7e80631