run tests for 1.22 and 1.23

.github/latest-version.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+major=1
+for minor in `seq 18 23`; do
+    for patch in `seq 1 50`; do
+        code=`curl -s -I https://storage.googleapis.com/kubernetes-release/release/v$major.$minor.$patch/bin/linux/amd64/kubectl -o /dev/null -w "%{http_code}"`
+        if [ "$code" != "200" ]; then
+            echo "Latest version for $major.$minor is: v$major.$minor.$(($patch-1))"
+            break
+        fi
+    done
+done

Jenkinsfile

@@ -9,12 +9,12 @@ String[] platforms = [
 
 // Kubectl versions to test against
 String[] kubectlVersions = [
-    '1.16.15',
-    '1.17.17',
-    '1.18.18',
-    '1.19.10',
-    '1.20.6',
-    '1.21.0',
+    '1.18.20',
+    '1.19.16',
+    '1.20.15',
+    '1.21.10',
+    '1.22.7',
+    '1.23.4'
 ]
 
 // Not sure what this does yet

README.md

@@ -22,7 +22,7 @@ node {
 
 ## Prerequisites
 * A jenkins installation running version 2.222.4 or higher (with jdk8 or jdk11).
-* An executor with `kubectl` installed (tested against [v1.16 to v1.21][travis-config] included).
+* An executor with `kubectl` installed (tested against [v1.18 to v1.23][Jenkinsfile] included).
 * A Kubernetes cluster.
 
 ## How it works
@@ -172,7 +172,7 @@ mvn clean test
 mvn release:prepare release:perform
 ```
 
-[travis-config]:.travis.yml
+[Jenkinsfile]:Jenkinsfile
 [credentials-plugin]:https://github.com/jenkinsci/credentials-plugin
 [kubernetes-plugin]:https://github.com/jenkinsci/kubernetes-plugin
 [kubernetes-credentials-plugin]:https://github.com/jenkinsci/kubernetes-credentials-plugin