Ignore includeSubdomains for hsts header

[JohnNiang]

What type of PR is this?

/kind improvement
/area core
/milestone 2.16.x

What this PR does / why we need it:

This PR ignores includeSubdomains for HSTS header. See #4943 for more.

Which issue(s) this PR fixes:

Fixes #4943

Does this PR introduce a user-facing change?

修复开启 HSTS 可能会导致未开启 HSTS 的子域名站点无法访问的问题

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.3% Duplication on New Code

See analysis details on SonarCloud

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 56.83%. Comparing base (5fdf6c0) to head (960ce60).
Report is 182 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #5956      +/-   ##
============================================
- Coverage     56.91%   56.83%   -0.08%     
- Complexity     3319     3498     +179     
============================================
  Files           587      612      +25     
  Lines         18968    20555    +1587     
  Branches       1401     1420      +19     
============================================
+ Hits          10795    11682     +887     
- Misses         7594     8293     +699     
- Partials        579      580       +1     

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

[guqing]

/lgtm

[f2c-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: guqing

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [guqing]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment