AWS Batch Support

[cwgem]

Support AWS batch per issue #781. This is somewhat of a draft of the whole thing to make sure the overall structure looks sane before I go up and CloudFormation all the things. Note that for the JobQueue resource's state property I diverged from the CF documentation and used the REST API documentation for CreateJobQueue which states that ENABLED or DISABLED are valid values.

The following resources are added:

• AWS::Batch::ComputeEnvironment
• AWS::Batch::JobDefinition
• AWS::Batch::JobQueue

The following property types are added:

• AWS Batch ComputeEnvironment ComputeResources
• AWS Batch JobDefinition ContainerProperties
• AWS Batch JobDefinition Environment
• AWS Batch JobDefinition MountPoints
• AWS Batch JobDefinition RetryStrategy
• AWS Batch JobDefinition Ulimit
• AWS Batch JobDefinition Volumes
• AWS Batch JobDefinition VolumesHost
• AWS Batch JobQueue ComputeEnvironmentOrder

If this looks good I'll go ahead and do the runtime testing. As for updating README.md's list of supported resources do you want that as a separate commit or should I just squash with the python code commit?

[markpeek]

This looks excellent. Note: I might have combined the state validators, added enabled/disabled constants, and possibly alphabetized the various props (the purest in me would prefer the AWS docs to be in alphabetical order but I know why you chose that order). I'm not asking for changes since this looks good to go. Feel free to add additional runtime and I'll commit. Thank you for this change! How about opening up a README issue and I'll update with the various new resources in 1 commit.

[cwgem]

@markpeek Let me do re-order on the props and some of the objects then to have them in alphabetical order (though the objects I can only re-order to the point of python being able to properly resolve definitions). To make an easier read I'll toss in a few comments to break up the file by Batch resource. I agree on the constants an validators so I'll go ahead and update that as well.

For the runtime testing it's going to take a bit since putting this all together into a template will be rather time consuming. Possibly middle of next week?

Okay on the README issue. I though there might be other services that got left out but wanted to get this finished out and didn't have a chance to do a full comparison.

[markpeek]

Thanks!