Arrays of objects returned by xk6-kubernetes do not have the length property

[pablochacin]

When developing a function that waits for a service to get its load balancer ip address, I found the array of ip addresses did not have a length property, making the code below to fail:

let svc = k8sClient.services.apply( ..... )
while (svc.status.load_balancer.ingress.lenght == 0) {       // length is 'undefined' which is != '0'
    sleep(1)
    svc = k8sClient.services.get("my-service", "my-namespace")
}
let svcIp = svc.status.load_balancer.ingress[0].ip

This is due to issues in the way goja defines the length property (thanks to @mstoykov for pointing to this) and is solved by bumping the k6 version used in xk6-kubernetes.