Provide a unit test to verify the functionality of UW handler
Provide a unit test to verify the functionality of UW handler

*CLOUDBLD-4640

Signed-off-by: Serhii Salatskyi <3a2b708ccf3db09237dcdc2ae263a91d7c669197@redhat.com>

projectatomic/osbs-client,projectatomic/osbs-client