Bug 1947248, added note to Compliance Operator installation instructions

Author: ahardin-rh

modules/compliance-operator-cli-installation.adoc

@@ -77,6 +77,11 @@ spec:
   sourceNamespace: openshift-marketplace
 ----
 
+[NOTE]
+====
+If you are setting the global scheduler feature and enable `defaultNodeSelector`, you must create the namespace manually and update the annotations of the `openshift-compliance` namespace, or the namespace where the Compliance Operator was installed, with `openshift.io/node-selector: “”`. This removes the default node selector and prevents deployment failures.
+====
+
 .Verification
 
 . Verify the installation succeeded by inspecting the CSV file: