Add a common exception message and use it for cases when:
The devfile location is unavailable.
The devfile content is is not valid: e.g the response content is an html content of an scm authorisation page.
* Add tests to check git-flow on 'azure-devops' git-provider
* Refactor methods
* Upfdate tests
* Update 'pat-secret.yaml' file
* Update the '.ci/openshift-ci/Dockerfile'
* Exclude 'testFactoryResolverNoPatOAuth' from the test
* Fix variable name
* Refactor '<testClone>' methods to handle errors more informative
* Create 'Dockerfile' file to configure ci-operator
* Update 'build-pr-check.yml' github action
* Add tests to check git flow without PAT setup
* Add tests to check git flow with PAT setup
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Co-authored-by: artaleks9 <artaleks9@users.noreply.github.com>
Co-authored-by: Igor Vinokur <ivinokur@redhat.com>
Shmaraiev Oleksandr