Generate Jenkins AMI if it doesn't exist

[PaulDuvall]

Determine if Jenkins AMI exists and it’s the correct version; otherwise, it will launch Packer. Jenkins is maintained in https://github.com/stelligent/tophat

[dnguyen9]

Jenkins AMI and jenkins-instance.json only describes for us-east-1 region. this will fail if it is launch in any other region

[PaulDuvall]

#54 Correct. The AMI needs to be updated for all supported CodePipeline regions, not all AWS regions, since this solution runs on CodePipeline. As of today, this is us-east-1 and us-west-2. Although, the Jenkins AMI runs from https://github.com/stelligent/tophat so it'll be updated there and support more regions. But, when consumed from Dromedary, it'll support the CodePipeline regions.

[dnguyen9]

Paul, can you confirm the security settings on https://s3.amazonaws.com/stelligent-training-public/master/jenkins-instance.json ? it seem it's not public.

[PaulDuvall]

@dq922 Done. Sorry about that. I'd uploaded some new changes and didn't change the default permissions