[JIRA] (OVIRT-2343) Make STDCI reporting UI configurable fir GitHub jobs

Make STDCI reporting UI configurable fir GitHub jobs ---------------------------------------------------- Key: OVIRT-2343 URL: https://ovirt-jira.atlassian.net/browse/OVIRT-2343 Project: oVirt - virtualization made easy Issue Type: Bug Components: Standard CI (Pipelines), STDCI Build Report, STDCI DSL Reporter: Barak Korren Assignee: Barak Korren Priority: High Make it so developers in GitHub projects can select the UI the see build results in from the STDCI DSL. h3. Acceptance Criteria # The is a "reporting" option in the STDCI DSL # The reporting option is a dictionary for which we now support only the "style" key # The style key can have one of 3 values - "classic", "blue ocean" or "stdci" mapping to appropriate UIs. # The default value for the style key is "default" which keeps existing behaviour. # Setting the reporting style makes "details" links from GitHub point to the the selected UI.