added initial skeleton for new tool to automatically gather logs from an appscale deployment
added tests to gather_logs to make sure it fails if appscale isn't actually running
adding pseudocode and filling in how gather_logs should work
added ability to copy logs from appscale nodes back to a local machine
added skeleton test for adding nodes, and updated test suite
ensuring that --ips has a value passed to it
making sure that file specified via --ips exists
validating yaml given to ensure it actually is valid yaml
also making sure ips.yaml file isn't just an empty file
not allowing users to add master nodes
verifying that local ssh key can log into each new machine to add
amended appcontrollerclient to remotely spawn new nodes, and changed add-nodes to pass data in the right format to it
renamed add_nodes to add_instances
now accepting add_to_existing as a flag to add-keypair, and added more test case coverage for it
added test/code to support only adding key to one node
extracted expect_script to a constant, since it's location never changes
fixed how we generate ssh keys in xen deployments
added new tool, add-instances, to dynamically add nodes (in xen so far)
changed ssh options to not check the remote host against our currently known hosts, fixing issue #53
refactored Rakefile to exec python tests, and added initial test suite skeleton for python tests