* feature/3.0:
  compile error
  refactor the way how to create worker instance
  1. Remove the primary ref. Only use ref to the parent segment. 2. Adjust globalTracerIds
  refactor cluster module, modify the way use to tell cluster worker
  Add tags test case.
  Add new test case for 3 InvokeContextTest.
  Fix interceptor instance singleton bug, and add some test cases.
  Alter TraceSegement, Add a list of DistributedTraceId as field `relatedGlobalTraces`.
  Shade akka.* in collector-worker. Prevent akka se/deserializing failure.
  Rename ServiceStarter to ServiceManager. Finish the major codes of TraceSegmentProcessQueue and CollectorClientService.
  Sync a result pom
  add recevier moudle
  fix test case issue
  fix tomcat cannot works issue
  fix #103
  Add a new ability to ServiceStarter, about finding a started service instance.
  Fix a test case failure issue.
  Recover logging-api/logging-log4j2 modules. Adjust codes for new modules.

* feature/collector:
  compile error
  refactor the way how to create worker instance
  refactor cluster module, modify the way use to tell cluster worker
  add recevier moudle

# Conflicts:
#	skywalking-collector/pom.xml
#	skywalking-collector/skywalking-collector-cluster/pom.xml
#	skywalking-collector/skywalking-collector-cluster/src/main/java/com/a/eye/skywalking/collector/actor/AbstractMember.java
#	skywalking-collector/skywalking-collector-cluster/src/main/java/com/a/eye/skywalking/collector/actor/AbstractWorker.java
#	skywalking-collector/skywalking-collector-cluster/src/main/java/com/a/eye/skywalking/collector/actor/AbstractWorkerProvider.java
#	skywalking-collector/skywalking-collector-cluster/src/main/java/com/a/eye/skywalking/collector/actor/WorkerRef.java
#	skywalking-collector/skywalking-collector-cluster/src/main/java/com/a/eye/skywalking/collector/actor/WorkersCreator.java
#	skywalking-collector/skywalking-collector-cluster/src/main/java/com/a/eye/skywalking/collector/cluster/WorkersListener.java
#	skywalking-collector/skywalking-collector-worker/pom.xml
#	skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/CollectorBootStartUp.java

2. Adjust globalTracerIds

Update latest release version to 2.3

Finish the major codes of TraceSegmentProcessQueue and CollectorClientService.

fix tomcat cannot works issue

# Conflicts:
#	skywalking-sniffer/skywalking-sdk-plugin/jdbc-plugin/src/main/java/com/a/eye/skywalking/plugin/jdbc/CallableStatementTracing.java
#	skywalking-sniffer/skywalking-sdk-plugin/jdbc-plugin/src/main/java/com/a/eye/skywalking/plugin/jdbc/ConnectionTracing.java
#	skywalking-sniffer/skywalking-sdk-plugin/jdbc-plugin/src/main/java/com/a/eye/skywalking/plugin/jdbc/PreparedStatementTracing.java
#	skywalking-sniffer/skywalking-sdk-plugin/jdbc-plugin/src/main/java/com/a/eye/skywalking/plugin/jdbc/StatementTracing.java

Update the latest released version.

fix some issue

Merge the 3.0-preview

Add collector modules to 3.0

fix issue