Minor changes for cross region baking
fixing typo. ANALYTICS was mentioned in the SEARCH node location
Signed test
Add signature checking to be baked on the AMI.
Use local repo_keys instead of relying on keyservers
Add DataStax repo key locally as well.
Reflector message used to have time repeated twice {0} in two places and looked like:
[INFO] 02/21/14-23:24:50 In Reflector loop. Received 0 of 1 responses from:        02/21/14-23:24:50

changed to index 3 and also enabled logger output as you're commonly just looking at the ami.log when it's running vs having to bounce between ami.conf and .log to see what the reflector is saying.
Make reflector logging a bit clearer.
Error out when DSE is requested without --username or --password
Bake with the newest AMIs including the now available sa-east-1 HVM instances