Add support for Jenkins Pipeline

[DDRBoxman]

Cleaned up the commit from @ansoni in hope of getting this merged.

[nwalke]

@Suryanarayanan Can we get this merged soon? The pipeline support PRs have been sitting around for quite a while.

[p1c2u]

+1

[naveedahmedsiddiqui]

We should explicitly import the class we need instead.

[naveedahmedsiddiqui]

Please see a minor comment I made. Also please acknowledge the license agreement for code change:

'This plugin is licensed under Apache 2.0. See the LICENSE file for more information.'

[DDRBoxman]

This code is released under Apache 2.0

[cfoehrdes]

Can we provide any help to get this feature merged in the near future?

[DDRBoxman]

Apparently, the team in charge of this changed recently. Amazon said that it might be at least another week till someone looks at it.

[Jmcfar]

Hi!

Thanks for the contribution.

Did you perform any testing as part of the changes? If so it'd be helpful to include that in the PR.

[Jmcfar]

Manually did testing on our end for both new pipelines support and older style behavior so going to merge this in. Thanks for the contribution!

[Jmcfar]

This has been published to the Jenkins plugin repository. Updating to the CodeDeploy plugin 1.19 or later should enable Pipeline support.