add imagepullsecrets for chart

[huiwq1990]

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:

For use private image registry case.

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:

For use private image registry case.

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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[codecov]

Codecov Report

Merging #1764 (41d328d) into master (ea8392b) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1764   +/-   ##
=======================================
  Coverage   52.21%   52.21%           
=======================================
  Files         172      172           
  Lines       20877    20877           
=======================================
  Hits        10900    10900           
  Misses       9015     9015           
  Partials      962      962           

Flag	Coverage Δ
unittests	52.21% <ø> (ø)

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[rambohe-ch]

@huiwq1990 please update version in Chart.yaml of yurt-manager when helm charts is updated.

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[openyurt-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: huiwq1990, rambohe-ch

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[rambohe-ch]

/lgtm