no longer using xml

Change-Id: Idf5f0ba264bc668ea0f2ce344408546c381355ab
*_server_url methods use the same file loading

Change-Id: Ibbea9fcc0513642dbdd3b452c3c76d26e6be5131
A boto-free implementation of put_metric_data

Change-Id: Ibb7569410694bd0e81d0414f8fe5def378c06afe
Use the boto-free put_metric_data in cfn-push-stats

Change-Id: I6c3303af2cbc266d25bb56e6af38124a67307e67
Remove boto as a dependency

Change-Id: Iff29c4f5e582e30d591dc4a6c9c9c56eed3e64be