Support push_targets in container_bundle

[codersasha]

PR Checklist

Please check if your PR fulfills the following requirements:

• [x] Tests for the changes have been added (for bug fixes / features)
• [ ] Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• [ ] Bugfix
• [x] Feature
• [ ] Code style update (formatting, local variables)
• [ ] Refactoring (no functional changes, no api changes)
• [ ] Build related changes
• [ ] CI related changes
• [ ] Documentation content changes
• [ ] Other... Please describe:

What is the current behavior?

container_bundle only supports a strange dictionary format for images.

What is the new behavior?

container_bundle can take a push_targets parameter, and the info for the image (repository, tag, etc) is taken from existing push rules. This also means contains_bundle supports using tag_files, and the subsequent push-all rule can push using these tag files as well.

Does this PR introduce a breaking change?

• [ ] Yes
• [x] No

Other information

[github-actions[bot]]

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