Add metric(s) to relate logical test cases in Jira/Azure DevOps to executed test cases in test reports

[fniessink]

Metric: "Test cases"

Entities are (logical) test cases, with status (based on the test report).

Parameter: statuses to include, values depend on the test report type, but probably include passed/failed/skipped/missing

This metric is different than existing metrics because it needs sources of two different types.

The assumption is that the physical test cases in the test reports will contain a reference to the logical test cases in Jira/Azure DevOps, e.g. by means of an id in the test case name.

UI:

• The metric details get multiple source tabs, one for test cases and one for test reports.

Out of scope:

• Adding the issue number to the test report. We assume that can be done through the test case name.

Later:

• Number of physical test cases without logical test case
• Extending the data model to specify what combination of sources is needed for a metric (e.g. "one_of(Jira, Azure) and one_of(Junit, Robot, etc.)").