Merge branch '1343-keycloak-hpa' into 'master'

Adding keycloak autoscaling info to docs and examples

See merge request !2517

docs/assets/configs/example/keycloak-prod-values.yaml

@@ -55,7 +55,11 @@ addons:
         -----END CERTIFICATE-----
 
     values:
-      replicas: 3
+      #replicas: 3
+      autoscaling:
+        enabled: true
+        minReplcias: 2
+        maxReplicas: 5
       command:
         - "/opt/keycloak/bin/kc.sh"
       args:

docs/understanding-bigbang/package-architecture/keycloak.md

@@ -259,6 +259,18 @@ addons:
       replicas: 3
 ```
 
+The Keycloak package also comes with a HorizontalPodAutoscaler resource which can be enabled. Enabling the HPA will overwrite the `replicas` key shown above:
+
+```yaml
+addons:
+  keycloak:
+    values:
+      autoscaling:
+        enabled: true
+        minReplicas: 2
+        maxReplicas: 4
+```
+
 ## Dependent Packages
 
 - Istio for ingress