Fixed bug in drupal formula. Needed to install gcc for some of the
pecl functions to work.
Increased the number of salt-master worker threads. Many formulas
(hostsfile, drupal, magento, hadoop) depend on the mine and peer
system. Increasing the worker thread count appears to reduce the
chances of having peer/mine requests timed out.
Changed hadoop to set the dfs default name to the ip of the private
interfaces.

Changed hostsfile to use the ip of the private interface.