add permission to get pod's log (#2037)
add permission to get pod's log (#2037)

Pipeline component needs the permission to  get tf serving pod log
https://github.com/kubeflow/pipelines/blob/master/components/kubeflow/deployer/src/deploy.sh#L202
kubeflow/kubeflow,kubeflow/kubeflow,kubeflow/kubeflow,kubeflow/kubeflow,kubeflow/kubeflow,kubeflow/kubeflow