ci: Add smtp pipeline

ci/smtp.jenkinsfile

@@ -0,0 +1,43 @@
+// vim: set ft=groovy sw=4 ts=4 sts=4 et :
+
+pipeline {
+    agent {
+        label 'ansible'
+    }
+
+    triggers {
+        cron 'H H * * *'
+    }
+
+    stages {
+        stage('kinit') {
+            steps {
+                withCredentials([file(
+                        credentialsId: 'keytab-jenkins@pyrocufflink.blue',
+                        variable: 'KEYTAB')]) {
+                    sh 'kinit -kt "${KEYTAB}" jenkins@PYROCUFFLINK.BLUE'
+                }
+            }
+        }
+
+        stage('SMTP') {
+            steps {
+                withCredentials([file(
+                        credentialsId: 'vault-jenkins@pyrocufflink.blue',
+                        variable: 'SUDO_PASS_FILE')]) {
+                    ansiblePlaybook \
+                        playbook: 'smtp-relay.yml',
+                        become: true,
+                        vaultCredentialsId: 'ansible-vault',
+                        extras: '-e@"${SUDO_PASS_FILE}" --diff'
+                }
+            }
+        }
+    }
+
+    post {
+        always {
+            sh 'kdestroy'
+        }
+    }
+}