Updates pallet to 0.72 (jclouds 1.4.2)

Changes to make storm-deploy work with more recent versions of pallet/jclouds:

- Pulls in changes from rummble to allow functioning in different regions.
  - Updates dependencies in project.clj
  - Updated jclouds namespace references to new versions (with a '2')
  - Updated use of nodes-with-tag to new nodes-in-group function.
  - Fixed warnings about use of deprecated functions.
  - Changes ganglia.clj as librrd2-dev wasn't available in test deployment and caused failure.
  - Made use of log4j to capture everything in one file which was helping me diagnose issues.