chore: add dnsPolicy for sample deployment

[tao12345666333]

Signed-off-by: Jintao Zhang zhangjintao9020@gmail.com

Please answer these questions before submitting a pull request

• Why submit this pull request?

• Bugfix

• New feature provided

• Improve performance

• Backport patches

• Related issues

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Bugfix

ref: #478

[codecov-commenter]

Codecov Report

Merging #498 (9a1c267) into master (f089ffe) will not change coverage.
The diff coverage is n/a.

❗ Current head 9a1c267 differs from pull request most recent head 5b23615. Consider uploading reports for the commit 5b23615 to get more accurate results

@@           Coverage Diff           @@
##           master     #498   +/-   ##
=======================================
  Coverage   36.28%   36.28%           
=======================================
  Files          50       50           
  Lines        4093     4093           
=======================================
  Hits         1485     1485           
  Misses       2406     2406           
  Partials      202      202           

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