Add ldap support

[nobodyiam]

No description provided.

[codecov-io]

Codecov Report

Merging #1380 into master will decrease coverage by 10.2%.
The diff coverage is n/a.

@@              Coverage Diff              @@
##             master    #1380       +/-   ##
=============================================
- Coverage     48.75%   38.55%   -10.21%     
+ Complexity     1783      151     -1632     
=============================================
  Files           375       41      -334     
  Lines         10702     1092     -9610     
  Branches       1107      138      -969     
=============================================
- Hits           5218      421     -4797     
+ Misses         5105      616     -4489     
+ Partials        379       55      -324

Impacted Files	Coverage Δ	Complexity Δ
...k/apollo/common/datasource/TitanEntityManager.java
.../ctrip/framework/apollo/util/http/HttpRequest.java
...p/framework/apollo/biz/service/ReleaseService.java
...p/framework/apollo/portal/service/ItemService.java
...mework/apollo/portal/service/NamespaceService.java
...p/framework/apollo/spring/util/SpringInjector.java
.../ctrip/framework/apollo/portal/entity/po/Role.java
...k/apollo/portal/service/ReleaseHistoryService.java
...apollo/spring/annotation/SpringValueProcessor.java
...mework/apollo/portal/entity/vo/EnvClusterInfo.java
... and 323 more

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[coveralls]

Coverage decreased (-0.5%) to 51.676% when pulling 9eb7045152056c98f4c8db7a62257995efb117db on nobodyiam:pandalin-ldap into ccacba2 on ctripcorp:master.

[pandalin]

@nobodyiam 本地测试了下，ldap模块没问题