Add JDK path

[Technoboy-]

Motivation

=== RUN   TestSinksOperations
    opeations_test.go:107: last sink status before timeout: {
          "numInstances": 1,
          "numRunning": 0,
          "instances": [
            {
              "instanceId": 0,
              "status": {
                "running": false,
                "error": "Cannot run program \"java\": Exec failed, error: 2 (No such file or directory) ",
                "numRestarts": 5,
                "numReadFromPulsar": 0,
                "numSystemExceptions": 0,
                "latestSystemExceptions": [],
                "numSinkExceptions": 0,
                "latestSinkExceptions": [],
                "numWrittenToSink": 0,
                "lastReceivedTime": 0,
                "workerId": "c-standalone-fw-50f128fd8221-8080"
              }
            }
          ]
        }
    test_help.go:76: /pulsarctl/pkg/ctl/sinks/opeations_test.go 109 task timeout

See here, #2065

the new jdk path has changed, so we need to add the path to ensure the container startup

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