Wait for clustertasks before checking pipelines

We observed on an SNO system, that the pipelines were there but the
clustertasks were not created yet, and so all the pipelineruns just
failed due to missing tasks. Let's make sure we wait for clustertasks
first.

scripts/start_pipelines.sh

@@ -3,8 +3,18 @@
 build_ns=quarkuscoffeeshop-cicd
 pipelines=('build-and-push-quarkuscoffeeshop-barista' 'build-and-push-quarkuscoffeeshop-counter' 'build-and-push-quarkuscoffeeshop-customerloyalty' 'build-and-push-quarkuscoffeeshop-customermocker' 'build-and-push-quarkuscoffeeshop-inventory' 'build-and-push-quarkuscoffeeshop-kitchen' 'build-and-push-quarkuscoffeeshop-web')
 
-echo "Checking for resources to be available to start pipelines"
 DELAY=5
+echo "Checking for ClusterTasks to be available"
+while true; do
+    OUT=$(oc get clustertasks 2>/dev/null | wc -l)
+    if [ ${OUT} -eq 0 ]; then
+        sleep ${DELAY}
+        continue
+    fi
+    break
+done
+
+echo "Checking for resources to be available to start pipelines"
 retry=0
 check=1
 while [ "$check" == "1" ]; do