Add template response to notify community that a budget alert thresho…

…ld has been triggered

projects/managed-hubs/support/index.md

@@ -23,4 +23,5 @@ process
 timeboxed-initial-ticket-evaluation
 communication
 time-off
+templates/index
 ```

projects/managed-hubs/support/templates/index.md

@@ -0,0 +1,42 @@
+(support:templates)=
+# Support Templates
+
+Here are a collection of templates you can use when communicating with a community
+in a support capacity. Ensure the values enclosed by `{{ }}` are filled in before
+sending.
+
+(support:templates:budget-alerts)
+## Notifying a community champion of a budget alert trigger
+
+> **Subject line:** Notice of increased usage on JupyterHub cluster {{ cluser_name }}
+> 
+> Hello {{ community_champion }},
+> 
+> We are writing to inform you that your JupyterHub cluster  in {{ cloud_vendor }}
+> project {{ project_id }} is experiencing unusually high usage. It is currently on
+> track to cost you a high bill for {{ next billing month }}. We're contacting you
+> because you're in our records as the community champion for {{ community_name }}.
+> 
+> **Details**
+> 
+> Your forecasted usage for {{ month }} would be {{ cost }}. This is above the budget
+> alert threshold we set of {{ alert_threshold }}. We set thresholds using a forecasting
+> model that averages the past three months of costs and adds a 20% buffer. If you
+> would like to change this threshold, please let us know by emailing [email protected].
+> 
+> Remember, you can always track usage of your hubs with your Grafana instance at
+> {{ grafana_url }}.
+> 
+> **What you should do next**
+> 
+> If you are expecting this increase because of high usage that you know about, you
+> don't need to do anything! But if this is unexpected, we'd like to talk with you
+> to collaboratively understand why the costs have gone up, and resolve the issue.
+> 
+> If you have any questions, please let us know by replying to this email.
+> 
+> As usual, you can expect your next bill by {{ latest possible date of next bill }}.
+> 
+> Thank you,
+> 
+> {{ name of customer service rep }}