Merge pull request #56603 from lahinson/hcp-ho-versioning-osdocs-5436

[OSDOCS-5436]: Adding versioning info about HyperShift Operator

Author: ousleyp

modules/hosted-control-planes-version-support.adoc

@@ -12,7 +12,20 @@ With each major, minor, or patch version release of {product-title}, two compone
 * HyperShift Operator
 * Command-line interface (CLI)
 
-The HyperShift Operator manages the lifecycle of hosted clusters that are represented by `HostedCluster` API resources. The HyperShift Operator is released with each {product-title} release.
+The HyperShift Operator manages the lifecycle of hosted clusters that are represented by `HostedCluster` API resources. The HyperShift Operator is released with each {product-title} release. After the HyperShift Operator is installed, it creates a config map called `supported-versions` in the HyperShift namespace, as shown in the following example. The config map describes the HostedCluster versions that can be deployed.
+
+[source,yaml]
+----
+    apiVersion: v1
+    data:
+      supported-versions: '{"versions":["4.13","4.12","4.11"]}'
+    kind: ConfigMap
+    metadata:
+      labels:
+        hypershift.openshift.io/supported-versions: "true"
+      name: supported-versions
+      namespace: hypershift
+----
 
 The CLI is a helper utility for development purposes. The CLI is released as part of any HyperShift Operator release. No compatibility policies are guaranteed.