Update fields of JIRA issues associated with current MR/PR, with the current build number.
First, the step needs to know tasks associated with the build, so it examines Git history of the merge that it was triggered by. Each merge request can have multiple tasks related to it. So step extracts all the messages of commits involved from the merge commit, and it looks for task keys using a predefined format (for example, [ABCD-1234]). Then using JIRA API, it updates custom fields of these tasks with current build number.
Additionally step can keep ticket history from failed/aborted builds. It uses Bitrise API to gather information about the commits from all aborted or failed builds preceding the current one.
The step does not clone git repository by itself, instead it is using the one located at $BITRISE_SOURCE_DIR.
Make sure repository is cloned before using it (guide).
Updates a JIRA issues field like Fix version or Links. Existing value is overwritten.
