Feature/lp 1887978

[ycliuhw]

Checklist

• Checked if it requires a pylibjuju change?
• Added integration tests for the PR?
• Added or updated doc.go related to packages changed?
• Do comments answer the question of why design decisions were made?

---

Description of change

Added a new services field in podspec V3 to allow charms to create extra services;

QA steps

$ yml2json /tmp/charm-builds/mariadb-k8s/reactive/k8s_resources.yaml | jq .kubernetesResources.services
[
  {
    "labels": {
      "foo": "bar"
    },
    "name": "my-service1",
    "spec": {
      "ports": [
        {
          "protocol": "TCP",
          "targetPort": 9376,
          "port": 80
        }
      ],
      "selector": {
        "app": "MyApp"
      }
    }
  },
  {
    "annotations": {
      "cloud.google.com/load-balancer-type": "Internal"
    },
    "labels": {
      "app": "test"
    },
    "spec": {
      "type": "LoadBalancer",
      "ports": [
        {
          "protocol": "TCP",
          "targetPort": 9376,
          "port": 80
        }
      ],
      "selector": {
        "app": "MyApp"
      }
    },
    "name": "my-service2"
  }
]

$ juju deploy /tmp/charm-builds/mariadb-k8s --resource mysql_image=mariadb

$ mkubectl get svc/my-service1 svc/my-service2 -nt1 -o yaml
mkubectl get svc/my-service1 svc/my-service2 -nt1 -o yaml
apiVersion: v1
items:
- apiVersion: v1
  kind: Service
  metadata:
    annotations:
      juju.io/controller: 8a844b9c-3858-4e9b-8f1a-9fdac102abbd
      juju.io/model: 56147af8-a822-49ee-8c28-cddd950d5c8c
    creationTimestamp: "2020-07-21T07:16:33Z"
    labels:
      foo: bar
      juju-app: mariadb-k8s
    name: my-service1
    namespace: t1
    resourceVersion: "169048"
    selfLink: /api/v1/namespaces/t1/services/my-service1
    uid: 54e755a0-0d0e-4401-b022-0e9d823da392
  spec:
    clusterIP: 10.152.183.109
    ports:
    - port: 80
      protocol: TCP
      targetPort: 9376
    selector:
      app: MyApp
    sessionAffinity: None
    type: ClusterIP
  status:
    loadBalancer: {}
- apiVersion: v1
  kind: Service
  metadata:
    annotations:
      cloud.google.com/load-balancer-type: Internal
      juju.io/controller: 8a844b9c-3858-4e9b-8f1a-9fdac102abbd
      juju.io/model: 56147af8-a822-49ee-8c28-cddd950d5c8c
    creationTimestamp: "2020-07-21T07:16:33Z"
    labels:
      app: test
      juju-app: mariadb-k8s
    name: my-service2
    namespace: t1
    resourceVersion: "169054"
    selfLink: /api/v1/namespaces/t1/services/my-service2
    uid: 2a395955-2137-4101-ba8c-99810fa1c95e
  spec:
    clusterIP: 10.152.183.2
    externalTrafficPolicy: Cluster
    ports:
    - nodePort: 30084
      port: 80
      protocol: TCP
      targetPort: 9376
    selector:
      app: MyApp
    sessionAffinity: None
    type: LoadBalancer
  status:
    loadBalancer: {}
kind: List
metadata:
  resourceVersion: ""
  selfLink: ""

Documentation changes

Yes

Bug reference

https://bugs.launchpad.net/juju/+bug/1887978

[wallyworld]

Thanks.

[ycliuhw]

!!build!!

[ycliuhw]

$$merge$$