Fix a bug. A node'label will be deleted if it deleted from a nodepool…

[chenyufeifei]

… that has the same label

#41

I add an annotation to record the node'label and annotations and taints.
When I need to delete the node from a nodePool. I will change the node' attribute according to this annotation.

What type of PR is this?

Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespace from that line:
/kind bug
/kind documentation
/kind enhancement
/kind good-first-issue
/kind feature
/kind question
/kind design
/sig ai
/sig iot
/sig network
/sig storage
/sig storage

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?

other Note

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In response to this:

… that has the same label

I add an annotation to record the node'label and annotations and taints.
When I need to delete the node from a nodePool. I will change the node' attribute according to this annotation.

What type of PR is this?

Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespace from that line:
/kind bug
/kind documentation
/kind enhancement
/kind good-first-issue
/kind feature
/kind question
/kind design
/sig ai
/sig iot
/sig network
/sig storage
/sig storage

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?

other Note

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[openyurt-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: chenyufeifei
To complete the pull request process, please assign charleszheng44
You can assign the PR to them by writing /assign @charleszheng44 in a comment when ready.

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[openyurt-bot]

Welcome @chenyufeifei! It looks like this is your first PR to openyurtio/yurt-app-manager 🎉

[chenyufeifei]

/assign @charleszheng44

[rambohe-ch]

/assign @kadisi @zzguang

[rambohe-ch]

@chenyufeifei please rebase the conflicting files.