[type:refactor] add an authentication on shenyu admin when register by http

[SaberSola]

Fix #2724

The corresponding function in the org.apache.shenyu.admin.controller.ShenyuHttpRegistryController, can register a gateway with out authentication, this pr will fix it

[codecov-commenter]

Codecov Report

Merging #2723 (b0b1321) into master (d95e8f8) will decrease coverage by 0.19%.
The diff coverage is 32.74%.

@@             Coverage Diff              @@
##             master    #2723      +/-   ##
============================================
- Coverage     60.37%   60.18%   -0.20%     
- Complexity     4394     4406      +12     
============================================
  Files           680      681       +1     
  Lines         19472    19574     +102     
  Branches       1727     1735       +8     
============================================
+ Hits          11757    11781      +24     
- Misses         6729     6799      +70     
- Partials        986      994       +8     

Impacted Files	Coverage Δ
...e/shenyu/admin/shiro/bean/StatelessAuthFilter.java	54.54% <0.00%> (ø)
...a/org/apache/shenyu/common/constant/Constants.java	50.00% <ø> (ø)
...rg/apache/shenyu/common/utils/FreshBeanHolder.java	0.00% <0.00%> (ø)
...pache/shenyu/plugin/base/AbstractShenyuPlugin.java	68.29% <0.00%> (ø)
...ster/client/http/HttpClientRegisterRepository.java	0.00% <0.00%> (ø)
...shenyu/register/client/http/utils/OkHttpTools.java	55.17% <0.00%> (-44.83%)	⬇️
...enyu/register/client/http/utils/RegisterUtils.java	23.07% <0.00%> (-76.93%)	⬇️
...che/shenyu/sync/data/http/HttpSyncDataService.java	74.26% <79.48%> (-6.93%)	⬇️
...pache/shenyu/sync/data/http/config/HttpConfig.java	84.61% <100.00%> (+4.61%)	⬆️
... and 1 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update d95e8f8...b0b1321. Read the comment docs.