Refactor CryptoService for simplifying RSA key generation

[JohnNiang]

What type of PR is this?

/kind cleanup
/area core
/milestone 2.16.x

What this PR does / why we need it:

This PR removes PatJwkSupplier interface, scheduled RSA key generation, and move some of them into CryptoService.

Currently, we only use pat_id_rsa as private key for authentication modules instead of id_rsa(deprecated).

Does this PR introduce a user-facing change?

None

[codecov]

Codecov Report

Attention: Patch coverage is 86.20690% with 4 lines in your changes are missing coverage. Please review.

Project coverage is 56.68%. Comparing base (5fdf6c0) to head (37094a0).
Report is 196 commits behind head on main.

Files	Patch %	Lines
...pp/security/authentication/impl/RsaKeyService.java	83.33%	4 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #5978      +/-   ##
============================================
- Coverage     56.91%   56.68%   -0.24%     
- Complexity     3319     3474     +155     
============================================
  Files           587      609      +22     
  Lines         18968    20476    +1508     
  Branches       1401     1418      +17     
============================================
+ Hits          10795    11606     +811     
- Misses         7594     8292     +698     
+ Partials        579      578       -1     

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

[guqing]

/lgtm

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 89.23077% with 7 lines in your changes are missing coverage. Please review.

Project coverage is 56.68%. Comparing base (5fdf6c0) to head (42ca0a3).
Report is 198 commits behind head on main.

Files	Patch %	Lines
...pp/security/authentication/impl/RsaKeyService.java	88.33%	6 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #5978      +/-   ##
============================================
- Coverage     56.91%   56.68%   -0.23%     
- Complexity     3319     3475     +156     
============================================
  Files           587      609      +22     
  Lines         18968    20478    +1510     
  Branches       1401     1418      +17     
============================================
+ Hits          10795    11608     +813     
- Misses         7594     8292     +698     
+ Partials        579      578       -1     

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

[sonarcloud]

Quality Gate passed

Issues
2 New issues
1 Accepted issue

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

See analysis details on SonarCloud

[guqing]

/lgtm

[f2c-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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