Setup stage of pipeline1 does not verify that a master/main branch exists

Background

The setup state in pipeline1 should validate git project structure before continuing on and give descriptive errors if the project is setup incorrectly.

This issue stems from this failed pipeline job. The repository was set up with development as it's default branch and it did not have a master branch which caused the pipeline to fail. A descriptive error message would have helped the user not create a support request.

Acceptance Criteria

• unsure what to put here 😆

Definition of Done

• Create descriptive errors within (or before) the setup stage in pipeline1 to validate repo structure.