Added FAQs and removed relnotes

Author: skmahe1077

config/redirects.yml

@@ -226,4 +226,4 @@ plugins:
       versioned/serving/using-subroutes.md: versioned/serving/traffic-management.md
       versioned/eventing/brokers/create-mtbroker.md: versioned/eventing/brokers/create-broker.md
       versioned/eventing/brokers/broker-admin-config-options.md: versioned/eventing/configuration/broker-configuration.md
-      versioned/eventing/concepts/event-mesh.md: versioned/eventing/concepts/event-mesh.md
+      versioned/eventing/event-mesh.md: versioned/eventing/concepts/event-mesh.md

docs/versioned/.nav.yml

@@ -215,6 +215,7 @@ nav:
       - Observability:
         - Collecting metrics: eventing/observability/metrics/collecting-metrics.md
         - Metrics Reference: eventing/observability/metrics/eventing-metrics.md
+      - FAQ: eventing/faq/README.md
     # Eventing reference docs
       - Reference:
         - Eventing API: eventing/reference/eventing-api.md

docs/versioned/eventing/faq/README.md

@@ -0,0 +1,13 @@
+---
+audience: developer
+components:
+  - eventing
+function: reference
+---
+
+# Eventing FAQs
+
+## What is a Sugar Controller?
+
+The Sugar Controller is an optional controller which will automatically create and clean up brokers based on the creation/deletion of namespaces and triggers.
+For more information on how to enable and configure the sugar controller, read the [sugar controller documentation](/docs/eventing/sugar).