add_binding_seletor_and_discovery

[ywj1352]

Make sure that:

• You have read the contribution guidelines.
• You submit test cases (unit or integration tests) that back your changes.
• Your local test passed ./mvnw clean install -Dmaven.javadoc.skip=true.

add binding Seletor and discovery.
step 1. : insert discovery_handler and discovery_handler_ref
step 2 : create listener on listenerNode

in this pr .
remove some logic about ApiServiceImpl#register(final ApiDO apiDO). [remove add URIRegisterDTO]
remove class ClientInfoRefreshedEventListener.
change loadDocOnSelectorChanged -> loadDocOnUpstreamChanged
change K8s-controller sync upstream
change LocalController sync selector [add sync upstream]
change E2E test add bindingData Api

QA DOC link

https://www.yuque.com/eureca/pgotw1/hkqkk5laubspgwl3#UojLR

[codecov-commenter]

Codecov Report

Attention: 461 lines in your changes are missing coverage. Please review.

Comparison is base (80484c7) 61.52% compared to head (cdb4d63) 61.29%.

Files	Patch %	Lines
...u/admin/service/impl/ProxySelectorServiceImpl.java	1.13%	87 Missing ⚠️
...henyu/admin/service/impl/DiscoveryServiceImpl.java	3.07%	63 Missing ⚠️
...e/shenyu/k8s/repository/ShenyuCacheRepository.java	3.22%	30 Missing ⚠️
...che/shenyu/admin/model/vo/DiscoveryUpstreamVO.java	0.00%	25 Missing ⚠️
...min/service/impl/DiscoveryUpstreamServiceImpl.java	4.00%	24 Missing ⚠️
.../service/manager/impl/LoadServiceDocEntryImpl.java	54.90%	19 Missing and 4 partials ⚠️
...he/shenyu/discovery/etcd/EtcdDiscoveryService.java	64.51%	16 Missing and 6 partials ⚠️
...yu/admin/discovery/AbstractDiscoveryProcessor.java	79.78%	11 Missing and 8 partials ⚠️
...e/shenyu/web/controller/LocalPluginController.java	40.62%	17 Missing and 2 partials ⚠️
...e/shenyu/admin/discovery/APDiscoveryProcessor.java	12.50%	14 Missing ⚠️
... and 26 more

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #5261      +/-   ##
============================================
- Coverage     61.52%   61.29%   -0.24%     
- Complexity     8525     8575      +50     
============================================
  Files          1239     1246       +7     
  Lines         37370    37809     +439     
  Branches       3596     3628      +32     
============================================
+ Hits          22992    23175     +183     
- Misses        12292    12544     +252     
- Partials       2086     2090       +4     

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