Provide new stage of module initialization. Named `notifyAfterCompleted`. And rename `init` stage to `start`. Now the initialization sequence is prepare -> start -> notifyAfterCompleted

A sql issue of H2 storage

Plugin test must compile with jdk 1.6, so not allow to use lambda.

Fix/h2bug

delete the compile plugin in sharing jdbc agent plugin pom file.

Fix/h2bug

fix the interceptor class of jdbc plugin is incorrect

To change the name of the author from pengys5 to Peng-yongsheng.

Merge branch 'master' of https://github.com/OpenSkywalking/skywalking into feature/collector-modelization

Feature/537

#537

#537

change the implementation of jdbc plugins