Added WOMBATS_ENV to commands

[dehli]

PR for CircleCI Build Process.

Ready for a PR?

• [X] I have updated the CHANGELOG with an entry including a description, a link to my profile, and a link to the issue ticket. This change is filed under an Enhancement or Bug Fix, is shown under the relevant release tag name, and is included in my PR branch.

Implementation Notes:

• Updates WOMBATS_ENV for CircleCI.

Breaking changes:

• None

[elibosley]

@dehli LGTM 👍