fix conflicts for getting node by local storage in yurthub filters

[rambohe-ch]

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

/kind bug

What this PR does / why we need it:

1. As described in pull request optimize yurthub kubelet node cache operator #1461 , filter servicetoplogy and nodeisolation have conflicts for getting node from local storage, and filter can not work well.

2. After diving into the code of these two filters, we found that node resource is used for resolving node pool, and as discussed in the issue: [feature request]can not move node to another nodepool by label modification #1382 and pull request feat: prevent node movement by label modification #1444 , node pool name for a node can not be changed after joining into the cluster.

3. at the same time, node pool name can be passed into yurthub by yurtadm join command, the detail info can be found in the pull request: add yurtadm join node in specified nodepool #1402 , so we just use node pool name or get node from kube-apiserver only once when node pool name is not passed by yurtadm join. then we can remove all the codes of getting node from local storage, and solve the conflicts problem.

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:

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

What this PR does / why we need it:

1. As described in pull request #1461 , filter servicetoplogy and nodeisolation have conflicts for getting node from local storage, and filter can not work well.

2. After diving into the code of these two filters, we found that node resource is used for resolving node pool, and as discussed in the issue: [feature request]can not move node to another nodepool by label modification #1382 and pull request feat: prevent node movement by label modification #1444 , node pool name for a node can not be changed after joining into the cluster.

3. at the same time, node pool name can be passed into yurthub by yurtadm join command, the detail info can be found in the pull request: add yurtadm join node in specified nodepool #1402 , so we just use node pool name or get node from kube-apiserver only once when node pool name is not passed by yurtadm join. then we can remove all the codes of getting node from local storage, and solve the conflicts problem.

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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[rambohe-ch]

@JameKeal @YTGhost PTAL

[codecov]

Codecov Report

Merging #1552 (1ef7e11) into master (c3cf90b) will increase coverage by 0.38%.
The diff coverage is 55.00%.

@@            Coverage Diff             @@
##           master    #1552      +/-   ##
==========================================
+ Coverage   50.85%   51.23%   +0.38%     
==========================================
  Files         133      133              
  Lines       15852    15740     -112     
==========================================
+ Hits         8062     8065       +3     
+ Misses       7045     6936     -109     
+ Partials      745      739       -6     

Flag	Coverage Δ
unittests	51.23% <55.00%> (+0.38%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/yurthub/filter/filter.go	55.43% <0.00%> (+0.88%)	⬆️
pkg/yurthub/filter/servicetopology/filter.go	72.14% <42.10%> (+15.84%)	⬆️
pkg/yurthub/filter/nodeportisolation/filter.go	85.71% <73.33%> (+25.85%)	⬆️
cmd/yurthub/app/config/config.go	53.61% <100.00%> (ø)
pkg/yurthub/filter/manager/manager.go	85.48% <100.00%> (+16.12%)	⬆️

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
2.0% Duplication

[YTGhost]

/lgtm

[JameKeal]

/lgtm

[openyurt-bot]

@JameKeal: changing LGTM is restricted to collaborators

In response to this:

/lgtm

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[kadisi]

/lgtm

[kadisi]

/lgtm

[kadisi]

/approve

[openyurt-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: kadisi, rambohe-ch

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