ci: enable k8s specific validations

.ci/Jenkinsfile

@@ -90,6 +90,28 @@ pipeline {
               }
             }
           }
+          stage('K8s') {
+            when {
+              // TODO: Run only if changes in
+              //  - "^deploy/kubernetes/.*"
+              //  - "^version/docs/version.asciidoc"
+              expression { return env.PLATFORM == 'ubuntu-20.04 && immutable' }
+            }
+            steps {
+              withGithubNotify(context: "K8s-${PLATFORM}") {
+                withMageEnv(){
+                  withEnv(["K8S_VERSION=v1.23.0", "KIND_VERSION=v0.11.1", "KUBECONFIG=${env.WORKSPACE}/kubecfg"]){
+                    dir("${BASE_DIR}"){
+                      retryWithSleep(retries: 2, seconds: 5, backoff: true){ sh(label: "Install kind", script: ".ci/scripts/install-kind.sh") }
+                      retryWithSleep(retries: 2, seconds: 5, backoff: true){ sh(label: "Install kubectl", script: ".ci/scripts/install-kubectl.sh") }
+                      sh(label: "Setup kind", script: ".ci/scripts/kind-setup.sh")
+                      sh(label: "Deploy to kubernetes",script: "make -C deploy/kubernetes test")
+                    }
+                  }
+                }
+              }
+            }
+          }
         }
       }
     }

.ci/scripts/install-kind.sh

@@ -0,0 +1,43 @@
+#!/usr/bin/env bash
+set -exuo pipefail
+
+MSG="environment variable missing."
+DEFAULT_HOME="/usr/local"
+KIND_VERSION=${KIND_VERSION:?$MSG}
+HOME=${HOME:?$DEFAULT_HOME}
+KIND_CMD="${HOME}/bin/kind"
+
+if command -v kind
+then
+    set +e
+    echo "Found Kind. Checking version.."
+    FOUND_KIND_VERSION=$(kind --version 2>&1 >/dev/null | awk '{print $3}')
+    if [ "$FOUND_KIND_VERSION" == "$KIND_VERSION" ]
+    then
+        echo "Versions match. No need to install Kind. Exiting."
+        exit 0
+    fi
+    set -e
+fi
+
+echo "UNMET DEP: Installing Kind"
+
+OS=$(uname -s| tr '[:upper:]' '[:lower:]')
+ARCH=$(uname -m| tr '[:upper:]' '[:lower:]')
+if [ "${ARCH}" == "aarch64" ] ; then
+    ARCH_SUFFIX=arm64
+else
+    ARCH_SUFFIX=amd64
+fi
+
+mkdir -p "${HOME}/bin"
+
+if curl -sSLo "${KIND_CMD}" "https://github.com/kubernetes-sigs/kind/releases/download/${KIND_VERSION}/kind-${OS}-${ARCH_SUFFIX}" ; then
+    chmod +x "${KIND_CMD}"
+else
+    echo "Something bad with the download, let's delete the corrupted binary"
+    if [ -e "${KIND_CMD}" ] ; then
+        rm "${KIND_CMD}"
+    fi
+    exit 1
+fi

.ci/scripts/install-kubectl.sh

@@ -0,0 +1,44 @@
+#!/usr/bin/env bash
+set -exuo pipefail
+
+MSG="parameter missing."
+DEFAULT_HOME="/usr/local"
+K8S_VERSION=${K8S_VERSION:?$MSG}
+HOME=${HOME:?$DEFAULT_HOME}
+KUBECTL_CMD="${HOME}/bin/kubectl"
+
+if command -v kubectl
+then
+    set +e
+    echo "Found kubectl. Checking version.."
+    FOUND_KUBECTL_VERSION=$(kubectl version --client --short 2>&1 >/dev/null | awk '{print $3}')
+    if [ "${FOUND_KUBECTL_VERSION}" == "${K8S_VERSION}" ]
+    then
+        echo "Versions match. No need to install kubectl. Exiting."
+        exit 0
+    fi
+    set -e
+fi
+
+echo "UNMET DEP: Installing kubectl"
+
+mkdir -p "${HOME}/bin"
+
+OS=$(uname -s| tr '[:upper:]' '[:lower:]')
+ARCH=$(uname -m| tr '[:upper:]' '[:lower:]')
+if [ "${ARCH}" == "aarch64" ] ; then
+    ARCH_SUFFIX=arm64
+else
+    ARCH_SUFFIX=amd64
+fi
+
+if curl -sSLo "${KUBECTL_CMD}" "https://storage.googleapis.com/kubernetes-release/release/${K8S_VERSION}/bin/${OS}/${ARCH_SUFFIX}/kubectl" ; then
+    chmod +x "${KUBECTL_CMD}"
+else
+    echo "Something bad with the download, let's delete the corrupted binary"
+    if [ -e "${KUBECTL_CMD}" ] ; then
+        rm "${KUBECTL_CMD}"
+    fi
+    exit 1
+fi
+

.ci/scripts/kind-setup.sh

@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+set -exuo pipefail
+
+kind create cluster --image kindest/node:${K8S_VERSION} --config - <<EOF
+kind: Cluster
+apiVersion: kind.x-k8s.io/v1alpha4
+nodes:
+- role: control-plane
+  kubeadmConfigPatches:
+  - |
+    kind: ClusterConfiguration
+    scheduler:
+      extraArgs:
+        bind-address: "0.0.0.0"
+        port: "10251"
+        secure-port: "10259"
+    controllerManager:
+      extraArgs:
+        bind-address: "0.0.0.0"
+        port: "10252"
+        secure-port: "10257"
+EOF
+kubectl cluster-info