Add an "is empty" operator on the JSD "SLA" field type.

The field used to store the SLA value only has numeric operators, but no "is empty" test.

Step to reproduce :

• Configure an SLA in a way some of the requests are not matched
• Try to create a JQL expression specifically matching the missed issues.

Needed for :

• Checking that the JSD admins / project admins are not missing any issues in the SLA configurations.
• Checking the SLA configuration matches a specific set of issues

Related to : https://answers.atlassian.com/questions/46082572

Affects Versions : 1.2.6.1, 3.2.7, 3.3.0

Workaround

1. Create a saved filter like "My SLA Not Empty" with JQL like: project = MYPROJECT AND "My SLA" = breached() OR "My SLA" != breached()
2. Reference the saved filter in a NOT query: project = MYPROJECT AND filter != "My SLA Not Empty"

https://community.atlassian.com/t5/Jira-questions/Find-issues-with-specific-SLA-field-beeing-empty/qaq-p/261489#U77355