podTemplate(label: 'pod 1', containers: [ containerTemplate(...)]) {
    node('pod1') {
        container('container1') {
            // start service 1
        }
    }
}
podTemplate(label: 'pod 2', containers[ containerTemplate(...)]) {
    node('pod2') {
        container('container2') {
            // start service 2
        }
}
stage ('Run test') {
    node {
        sh 'run something that causes service 1 to query service 2'
    }
}