Provide further notification filtering options for official Jira Slack integration

Problem Definition

Currently it is only possible to filter based on issue type, priority and the following events:

Suggested Solution

Provide further options to filter the notifications sent to Slack channel such as JQL queries.

Why this is important

This will provide further customization and makes the integration richer,

Workaround

Currently there is no workaround.

Notes:

Please check the internal comment for further details.