fix(docs): Update getting-started script pre-26.3.0 (#813)

* chore: Add wait conditions to getting-started script

* chore: Update OPA version in template

Author: Techassi

docs/modules/opa/examples/getting_started/getting_started.sh

@@ -17,6 +17,9 @@ then
   exit 1
 fi
 
+echo "Waiting for node(s) to be ready..."
+kubectl wait node --all --for=condition=Ready --timeout=120s
+
 case "$1" in
 "helm")
 echo "Installing operators with Helm"
@@ -36,6 +39,9 @@ exit 1
 ;;
 esac
 
+# TODO: Remove once https://github.com/stackabletech/issues/issues/828 has been implemented (see that issue for details).
+until kubectl get crd opaclusters.opa.stackable.tech >/dev/null 2>&1; do echo "Waiting for CRDs to be installed" && sleep 1; done
+
 echo "Creating OPA cluster"
 # tag::apply-opa-cluster[]
 kubectl apply -f opa.yaml

docs/modules/opa/examples/getting_started/getting_started.sh.j2

@@ -17,6 +17,9 @@ then
   exit 1
 fi
 
+echo "Waiting for node(s) to be ready..."
+kubectl wait node --all --for=condition=Ready --timeout=120s
+
 case "$1" in
 "helm")
 echo "Installing operators with Helm"
@@ -36,6 +39,9 @@ exit 1
 ;;
 esac
 
+# TODO: Remove once https://github.com/stackabletech/issues/issues/828 has been implemented (see that issue for details).
+until kubectl get crd opaclusters.opa.stackable.tech >/dev/null 2>&1; do echo "Waiting for CRDs to be installed" && sleep 1; done
+
 echo "Creating OPA cluster"
 # tag::apply-opa-cluster[]
 kubectl apply -f opa.yaml

docs/modules/opa/examples/getting_started/opa.yaml.j2

@@ -5,7 +5,7 @@ metadata:
   name: simple-opa
 spec:
   image:
-    productVersion: "1.8.0"
+    productVersion: "1.12.3"
   servers:
     roleGroups:
       default: {}