Feature Request Summary: 

Have the auto-suggest feature work when populating Labels for a new Jira ticket.

Description/Use Cases: 

Today, if someone makes Labels a Required field it correctly shows up in ZenDesk when creating a Jira ticket from the ZenDesk ticket.  However, whilst other lookup fields suggested their available values, Label behaved like a standard text field.  Having suggested labels would improve users ability to correctly assign appropriate values to the ticket.

Business impact of limitation or missing feature:

Labels may be entered with typos / inconsistencies.

Users are made to think more than they should be expected to.

Other necessary information or resources:

Looking at Jira's own UI, it seems that the suggested values come from a call to the following API: `https://{tenantname}.atlassian.net/rest/api/1.0/labels/suggest?query=&sessionId={session-id-gui}`.  That this includes the Jira session id may be an issue (i.e. as that's user specific), though I believe the Jira integration runs under a dedicated Jira user account; so hopefully the required list can be found by that / the values aren't user-specific?

We've previously logged this with ZenDesk Support:  https://support.zendesk.com/hc/requests/10295968