Create MockEnv helper for unit tests
Create MockEnv helper for unit tests

* CLOUDBLD-73

Aims to be a replacement for ad-hoc, often copy-pasted methods for
mocking DockerBuildWorkflow in plugin tests.

Signed-off-by: Adam Cmiel <1217f9865bd733d1bcad0d0d64be310272c5592c@redhat.com>

DBuildService/atomic-reactor,projectatomic/atomic-reactor,projectatomic/atomic-reactor,DBuildService/atomic-reactor,fr34k8/atomic-reactor,fr34k8/atomic-reactor