This is a bug fix to my initial work when implementing
batch_delete_image. Deleting the last tag for a given image should
delete the image from the backend.
I also cleaned up the tests previously-added in the initial
implementation.
* Add batch_get_image for ECR
* Add tests for batch_get_image
* Add tests for batch_get_image
* Undo local commits
* Undo local commits
* Adding object representation for batch_get_image
* Update responses. Add a couple more tests.
* X-Ray Client SDK patched
Fixes#1250
* Fixed flake8
* Fixed some issues
* Fixed flake8
* Fixed more typos
* Fixed python2 string
* Fixed aws-sdk patch order
* Added more test cases to test the patching
If images had been pushed to a repository, they would be included in the
response object, and the json encoder could not serialize the Image class.
Since they are not included in the boto response, I just deleted the images
field from the response object for Repositories.
I also found a duplicate test in the ecr class, so I removed one of them.
