Add yurthub podenvupdater filter

[techworldhello]

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 feature

What this PR does / why we need it:

Adds a filter in Yurthub that sets the KUBERNETES_SERVICE_HOST environment variable to the Yurthub proxy IP. This enhancement would ensure node autonomy for edge nodes when they are operating offline.

Which issue(s) this PR fixes:

Fixes #2158

Special notes for your reviewer:

/assign @rambohe-ch

Does this PR introduce a user-facing change?

NONE

other Note

I noticed that documentation on new features are added to the changelog.md when a new version is created eg. https://github.com/openyurtio/openyurt/pull/1425/files. But if the maintainers prefer that this is added as a part of this PR please let me know,

[codecov]

Codecov Report

Attention: Patch coverage is 90.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 58.96%. Comparing base (3713163) to head (05a6544).
Report is 36 commits behind head on master.

Files with missing lines	Patch %	Lines
pkg/yurthub/filter/podenvupdater/filter.go	89.65%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2159      +/-   ##
==========================================
+ Coverage   56.09%   58.96%   +2.87%     
==========================================
  Files         186      211      +25     
  Lines       18092    18998     +906     
==========================================
+ Hits        10149    11203    +1054     
+ Misses       6910     6712     -198     
- Partials     1033     1083      +50     

Flag	Coverage Δ
unittests	58.96% <90.00%> (+2.87%)	⬆️

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[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud