add-nodeSelector

[magorKathy]

What type of PR is this?

What this PR does / why we need it:
It's needed so we can configure a NodeSelector for Envoy gateway pods within values file.
A common use case for nodeSelector configuration is to control the placement of pods on specific nodes within a cluster based on node labels. This allows to ensure that certain workloads run only on nodes that meet specific criteria, such as hardware specifications, geographic location, or other custom attributes.

Which issue(s) this PR fixes:
N/A

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 67.94%. Comparing base (6e70981) to head (4eeaa58).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4017      +/-   ##
==========================================
+ Coverage   67.88%   67.94%   +0.06%     
==========================================
  Files         187      187              
  Lines       23023    23023              
==========================================
+ Hits        15630    15644      +14     
+ Misses       6273     6262      -11     
+ Partials     1120     1117       -3     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[arkodg]

thanks for raising this PR @magorKathy, added a comment

[zirain]

please fix DCO, and run make -k gen-check

[zirain]

donot merge main, this one is simple.
Otherwise I need approve CI for first-time contributor again and again, thanks!

[arkodg]

thanks !