Add extra metadata to hub incident template (#816)

.github/ISSUE_TEMPLATE/3_incident-report.md

@@ -2,7 +2,7 @@
 name: "\U0001F4DD Hub Incident"
 about: Report an incident on our running hub infrastructure.
 title: "[Incident] {{ TITLE }}"
-labels: "type: incident report"
+labels: "type: Hub Incident", support
 assignees: ''
 
 ---
@@ -17,6 +17,10 @@ Quick summary of the problem. Update this section as we learn more, answering:
 - what went wrong and how we fixed it.
 -->
 
+## Hub information
+
+- Hub URL: {{ INSERT HUB URL HERE }}
+
 ## Timeline (if relevant)
 
 If it makes sense to include a timeline for this incident, then do so below.