Fix some problems related to clustering.

* Fix the broken template to parse correctly again!
* Fix the wipe-db dependency issue for the erlang cookie file.
Fix the tests by removing verify_contents.

Verify_contents is very fragile and can easily make you think
something is broken.  I replaced all references to it with
regular contain_file checks.

Avoid using {} in these regexs as it breaks rspec on 1.8.7.
Merge pull request #99 from apenney/fix-clustering

Fix some problems related to clustering.