fix kubectl apply set last applied namespace error

[zhouya0]

What type of PR is this?

/kind bug

What this PR does / why we need it:

1. kubectl apply set-last-applied should use resource's namespace but not given namespace. Otherwise it will use the default namespace. See kubectl apply set-last-applied does not use manifest's metadata.namespace kubectl#787
2. We can ignore given namespace because if namespace is not resource's namespaces, it will give error before going to the patch action:

kubectl apply set-last-applied  -f pod-yaml/test-svc.yaml -n default

error: the namespace from the provided object "test" does not match the namespace "default". You must pass '--namespace=test' to perform this operation.

Which issue(s) this PR fixes:

Fixes #kubernetes/kubectl#787

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

fix kuebctl apply set-last-applied namespaces error  

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

[k8s-ci-robot]

Hi @zhouya0. Thanks for your PR.

I'm waiting for a kubernetes member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[zhouya0]

/assign @seans3

[tanjunchen]

/ok-to-test

[zhouya0]

/retest

[zhouya0]

/test pull-kubernetes-e2e-gce

[soltysh]

/lgtm
/approve

[soltysh]

/kind bug
/priority backlog

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: soltysh, zhouya0

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• staging/src/k8s.io/kubectl/OWNERS [soltysh]

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[fejta-bot]

/retest
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Review the full test history for this PR.

Silence the bot with an /lgtm cancel or /hold comment for consistent failures.

[k8s-ci-robot]

@zhouya0: The following test failed, say /retest to rerun all failed tests:

Test name	Commit	Details	Rerun command
pull-kubernetes-e2e-kind-ipv6	4291a03	link	/test pull-kubernetes-e2e-kind-ipv6

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository. I understand the commands that are listed here.