note pre-installed gh action programs

Author: mattfenwick

hack/kind/run-cyclonus.sh

@@ -10,6 +10,8 @@ RUN_FROM_SOURCE=${RUN_FROM_SOURCE:-true}
 FROM_SOURCE_ARGS=${FROM_SOURCE_ARGS:-"generate --include conflict --job-timeout-seconds 2"}
 INSTALL_KIND=${INSTALL_KIND:-true}
 
+# see https://github.com/actions/virtual-environments/blob/main/images/linux/Ubuntu2004-README.md
+#   github includes a kind version, but it may not be the version we want
 if [[ $INSTALL_KIND == true ]]; then
   curl -Lo ./kind https://github.com/kubernetes-sigs/kind/releases/download/"${KIND_VERSION}"/kind-$(uname)-amd64
   chmod +x ./kind