Fix creation of deployment on build that is retried, redeployed or rollback

What does this MR do?

Add missing environment to be copied when retrying a build.

Why was this MR needed?

The retried builds did not create a deployments.

What are the relevant issue numbers?

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/19521

• CHANGELOG entry added
• Documentation created/updated
• API support added
• Tests
  • Added for this feature/bug
  • All builds are passing
• Conform by the style guides
• Branch has no merge conflicts with master (if you do - rebase it please)
• Squashed related commits together