* Add e2e tests for Service.spec.trafficDistribution
* Fix linting issue
* Fix spelling
* Add integration tests for trafficDistribution
* Use nodeSelection instead of nodeName to schedule pods on a specific zonal node
* Fix import alias corev1 -> v1 in e2e test
* Address comments
* Add a way to only print log lines in case of errors. This is deemed to be good behaviour by e2e tests guidelines