Fix kubelet flags.

[Random-Liu]

pflag now sets golang flag Parsed before parsing flags spf13/pflag@1ce0cc6. With that, all kubelet flags setting will be skipped.

We initially added flag.Parsed check to work around a issue that flags are parsed twice, thus kubelet flags are appended twice.

However, it doesn't seem to be the case now. I removed the Parsed check, and kubelet flags are only appended once.

/tmp/node-e2e-20180416T200912/kubelet --kubeconfig /tmp/node-e2e-20180416T200912/kubeconfig --root-dir /var/lib/kubelet --v 4 --logtostderr --allow-privileged true --network-plugin=kubenet --cni-bin-dir /tmp/node-e2e-20180416T200912/cni/bin --cni-conf-dir /tmp/node-e2e-20180416T200912/cni/net.d --hostname-override test-cos-beta-66-10452-53-0 --container-runtime docker --container-runtime-endpoint unix:///var/run/dockershim.sock --config /tmp/node-e2e-20180416T200912/kubelet-config --experimental-mounter-path=/tmp/node-e2e-20180416T200912/mounter --experimental-kernel-memcg-notification=true --runtime-cgroups=/system.slice/docker.service

This PR removes the unnecessary Parsed check to fix the test. @mtaufen

/cc @kubernetes/sig-node-pr-reviews
Signed-off-by: Lantao Liu lantaol@google.com

Release note:

none

[mtaufen]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: mtaufen, Random-Liu

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[k8s-github-robot]

/test all [submit-queue is verifying that this PR is safe to merge]

[Random-Liu]

/test pull-kubernetes-e2e-gce-device-plugin-gpu
/test pull-kubernetes-e2e-kops-aws

[k8s-ci-robot]

@Random-Liu: The following test failed, say /retest to rerun them all:

Test name	Commit	Details	Rerun command
pull-kubernetes-e2e-gce-device-plugin-gpu	27105c9	link	/test pull-kubernetes-e2e-gce-device-plugin-gpu

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[k8s-github-robot]

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions here.