add python-boto dependency
fix memory for m3.xlarge
testcase_32_ephemeral.py: no -I option for mkfs.ext3
testcase_32_ephemeral.py: fix grep
valid_runner.py: pretty logging in server mode
testcase_36_ebs.py: add more debug info
testcase_36_ebs.py: use "_placement when it's available"
x86_64_hvm_kernel.yaml: no ephemerals for m3.xlarge
valid_result.py library introduced
valid_runner.py: send nice validation results by email per ami
testcase_25_uname.py: no /etc/sysconfig/kernel checks for RHEL7 (pre)