Use certificates.k8s.io/v1beta1 api version for legacy k8s cluster

charts/imagepullsecret-injector/Chart.yaml

@@ -15,7 +15,7 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 0.0.20
+version: 0.0.20-legacy
 
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to

charts/imagepullsecret-injector/scripts/create-signed-cert.sh

@@ -85,7 +85,7 @@ kubectl delete csr ${csrName} 2>/dev/null || true
 echo "Creating new CertificateSigningRequests"
 # create  server cert/key CSR and  send to k8s API
 cat <<EOF | kubectl create -f -
-apiVersion: certificates.k8s.io/v1
+apiVersion: certificates.k8s.io/v1beta1
 kind: CertificateSigningRequest
 metadata:
   name: ${csrName}