fix: Add labels to ephemeral (listener) volumes

[razvan]

Description

🟢 CI https://ci.stackable.tech/view/02%20Operator%20Tests%20(custom)/job/hdfs-operator-it-custom/143/

Part of stackabletech/issues#555

Depends on stackabletech/operator-rs#799

Ensure the ephemeral (listener) volumes attached directly to the datanode containers are labeled with the "recommended labels".

This is now the expected structure:

metadata:
  name: hdfs-datanode-default
spec:
  template:
    volumes:
    - ephemeral:
        volumeClaimTemplate:
          metadata:
            annotations:
              listeners.stackable.tech/listener-class: external-unstable
            creationTimestamp: null
            labels:
              app.kubernetes.io/component: datanode
              app.kubernetes.io/instance: hdfs
              app.kubernetes.io/name: hdfs
              app.kubernetes.io/role-group: default
          spec:
            accessModes:
            - ReadWriteMany
            resources:
              requests:
                storage: "1"
            storageClassName: listeners.stackable.tech
            volumeMode: Filesystem
      name: listener

Stacklet listing now includes datanode endpoints as they inherit the labels of the (listener) ephemeral volumes:

❯ stackablectl stacklet list -n kuttl-test-direct-wolf

┌───────────┬─────────┬────────────────────────┬──────────────────────────────────────────────────────────────┬─────────────────────────────────┐
│ PRODUCT   ┆ NAME    ┆ NAMESPACE              ┆ ENDPOINTS                                                    ┆ CONDITIONS                      │
╞═══════════╪═════════╪════════════════════════╪══════════════════════════════════════════════════════════════╪═════════════════════════════════╡
│ hdfs      ┆ hdfs    ┆ kuttl-test-direct-wolf ┆ datanode-default-0-listener-data     172.18.0.2:30580        ┆                                 │
│           ┆         ┆                        ┆ datanode-default-0-listener-http     http://172.18.0.2:32297 ┆                                 │
│           ┆         ┆                        ┆ datanode-default-0-listener-ipc      172.18.0.2:31998        ┆                                 │
│           ┆         ┆                        ┆ datanode-default-0-listener-metrics  172.18.0.2:30805        ┆                                 │
│           ┆         ┆                        ┆ datanode-default-1-listener-data     172.18.0.2:30990        ┆                                 │
│           ┆         ┆                        ┆ datanode-default-1-listener-http     http://172.18.0.2:32605 ┆                                 │
│           ┆         ┆                        ┆ datanode-default-1-listener-ipc      172.18.0.2:30825        ┆                                 │
│           ┆         ┆                        ┆ datanode-default-1-listener-metrics  172.18.0.2:30264        ┆                                 │
│           ┆         ┆                        ┆ namenode-default-0-http              http://172.18.0.2:31438 ┆                                 │
│           ┆         ┆                        ┆ namenode-default-0-metrics           172.18.0.2:31633        ┆                                 │
│           ┆         ┆                        ┆ namenode-default-0-rpc               172.18.0.2:31447        ┆                                 │
│           ┆         ┆                        ┆ namenode-default-1-http              http://172.18.0.2:30285 ┆                                 │
│           ┆         ┆                        ┆ namenode-default-1-metrics           172.18.0.2:32287        ┆                                 │
│           ┆         ┆                        ┆ namenode-default-1-rpc               172.18.0.2:30711        ┆                                 │
├╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┤
│ zookeeper ┆ hdfs-zk ┆ kuttl-test-direct-wolf ┆ zk                                   172.18.0.2:32241        ┆ Available, Reconciling, Running │
└───────────┴─────────┴────────────────────────┴──────────────────────────────────────────────────────────────┴─────────────────────────────────┘

Use "stackablectl stacklet credentials [OPTIONS] <PRODUCT_NAME> <STACKLET_NAME>" to display credentials for deployed stacklets.

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[sbernauer]

LGTM otherwise

[sbernauer]

I noticed the journalnodes are missing Listeners. As you can not port-forward, there is no way to access the journalnode UI AFAIK. I think we should expose that UI as well, what do you think?

Was already discussed in Slack, no need to expose the JN UI