Switch API to ping OIDC endpoint to new model

[reasonerjt]

This commit updates the API POST /api/v2.0/system/oidc/ping to new
programming model, in which the code will be generated by go-swagger.

Signed-off-by: Daniel Jiang jiangd@vmware.com

[codecov]

Codecov Report

Merging #14370 (e96c1cb) into master (d36994b) will increase coverage by 1.11%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master   #14370      +/-   ##
==========================================
+ Coverage   62.94%   64.06%   +1.11%     
==========================================
  Files         915      915              
  Lines       61614    63486    +1872     
  Branches     2034     2034              
==========================================
+ Hits        38786    40674    +1888     
+ Misses      18886    18872      -14     
+ Partials     3942     3940       -2     

Flag	Coverage Δ
unittests	64.06% <0.00%> (+1.11%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/core/controllers/oidc.go	0.00% <ø> (ø)
src/pkg/oidc/helper.go	46.50% <ø> (ø)
src/pkg/oidc/secret.go	17.24% <ø> (ø)
src/pkg/oidc/testutils.go	100.00% <ø> (ø)
src/server/middleware/security/idtoken.go	22.58% <ø> (ø)
src/server/middleware/security/oidc_cli.go	78.12% <ø> (ø)
src/server/v2.0/handler/handler.go	0.00% <0.00%> (ø)
src/server/v2.0/handler/oidc.go	0.00% <0.00%> (ø)
src/pkg/scan/dao/scanner/registration.go	55.68% <0.00%> (-12.50%)	⬇️
src/jobservice/worker/cworker/c_worker.go	66.18% <0.00%> (-1.94%)	⬇️
... and 18 more

[wy65701436]

lgtm