Fix quotes and install istio CRD's separately

Author: jcrossley3

etc/scripts/install.sh

@@ -7,8 +7,8 @@ if [ "$1" != "-q" ]; then
   echo "  This script will attempt to install istio, knative, and OLM in your "
   echo "  Kubernetes/OpenShift cluster."
   echo
-  echo "  If targeting OpenShift, a recent version of `oc` should be available"
-  echo "  in your PATH. Otherwise, `kubectl` will be used."
+  echo "  If targeting OpenShift, a recent version of 'oc' should be available"
+  echo "  in your PATH. Otherwise, 'kubectl' will be used."
   echo
   echo "  If using OpenShift 3.11 and your cluster isn't minishift, ensure"
   echo "  \$KUBE_SSH_KEY and \$KUBE_SSH_USER are set"

etc/scripts/installation-functions.sh

@@ -177,6 +177,7 @@ function install_olm {
 function install_istio {
   if check_minikube; then
     echo "Detected minikube - incompatible with Maistra operator, so installing upstream istio."
+    $CMD apply -f "https://github.com/knative/serving/releases/download/${KNATIVE_SERVING_VERSION}/istio-crds.yaml" && \
     $CMD apply -f "https://github.com/knative/serving/releases/download/${KNATIVE_SERVING_VERSION}/istio.yaml"
     wait_for_all_pods istio-system
   else