Add “ClassLoader” paramter for enhance method. Prepare for improving interceptor initialization performance.

Merge branch 'feature/high-performance-agent' of https://github.com/wu-sheng/sky-walking into feature/high-performance-agent

* 'feature/high-performance-agent' of https://github.com/wu-sheng/sky-walking:
  let the sense of filter more clear
  Fix issue that skywalking-agent.jar include the google class  and exclude the proto files inside protobuf-java

Exclude google class when shading skywalking-agent.jar

Fix issue that skywalking-agent.jar include the google class  and exclude the proto files inside protobuf-java

Merge branch 'feature/high-performance-agent' of https://github.com/wu-sheng/sky-walking into feature/high-performance-agent

* 'feature/high-performance-agent' of https://github.com/wu-sheng/sky-walking:
  fixed grpc proto compile error

* master:
  add test case and fix logical error
  Fix windows script start collector failure.
  fix skywalking container start failure
  fix  lost tags
  Add mechanism to set default status(on/off) of plugin
  Add layer tag value: mq.

# Conflicts:
#	apm-sniffer/apm-agent-core/src/main/java/org/skywalking/apm/agent/core/context/trace/Span.java

Fix windows script start collector failure.

Add mechanism to set default status(on/off) of plugin

Merge branch 'feature/high-performance-agent' of https://github.com/wu-sheng/sky-walking into feature/high-performance-agent

* 'feature/high-performance-agent' of https://github.com/wu-sheng/sky-walking:
  add logic of shade grpc

# Conflicts:
#	apm-sniffer/apm-agent/pom.xml

Fix issue that lost some integer tags

Fix skywalking container start failure

add logic of shade grpc