Add a 15-second timeout to external service calls to fill Doorkeeper link tags
Add a 15-second timeout so we'll do something reasonable-ish in the face of a downed service provider. Later, I plan to healthcheck Asana/JIRA providers in a generic way (see T13287) so we can stop making calls if they time out / fail too frequently.
- Linked to JIRA and Asana tasks in comments.
- Set timeout to 0.0001 seconds, saw requests time out.
Reviewed By: amckinley
Differential Revision: https://secure.phabricator.com/D20530