LIF-1000 Runbook - Custom rotation process (#575)

Author: emortong

RUNBOOK.md

@@ -340,6 +340,12 @@ There are currently no keys in this app that are self-serve via the API Gateway
 
 ### Custom rotation process
 
+- `ALS_API_KEY`
+
+  - **For querying:** This queries the AIM /licenses and /users/{uuid}/profile/basic endpoint.
+  - **Usage:** Used for getting licences and profile information.
+  - **How to rotate:** Currently this key uses a deprecated policy `AIM APIs - Master Policy`, to rotate this key must become two keys: one for the `Access Licence Service` policy and another for the `User Profie` policy and the code in next-syndication-api must be updated to reflect this.
+
 - `DATABASE_PASSWORD`
 
   - **For querying:** Syndication Postgres AWS RDS Database