added shell to LocalState so that it can make shell calls
fixes for euca - uses old interface to authorize security groups, and doesn't abort if enabling root login fails on euca
added old coverage back in - will put new coverage in as a separate pull
removed old coverage once more
renamed EC2 -> Euca in eucaagent
extracted sleep time to constant
removed unused append_to_log method
removed sleep on unsupported deployments
removed unnecessary sleep
specifying return type in get_credentials
clarified comment
increased cert timeout time
removed sleep between run and desc instances
removed unnecessary sleeps and extracted needed sleeps to constants
Merge pull request #98 from shatterednirvana/run-instances-in-py

Rewriting appscale-run-instances in Python
Merge branch 'master' into desc-instances-in-py