* Upgrade jdk 11 in dockerfile and remove unused java_opts.
* DataCarrier changes a `#consume` API to add properties as a parameter to initialize consumer when
use `Class<? extends IConsumer<T>> consumerClass`.
* Split javaagent into skywalking-java repository. https://github.com/apache/skywalking-java
#### Java Agent
* Support Multiple DNS period resolving mechanism
* Modify `Tags.STATUS_CODE` field name to `Tags.HTTP_RESPONSE_STATUS_CODE` and type from `StringTag` to `IntegerTag`, add `Tags.RPC_RESPONSE_STATUS_CODE` field to hold rpc response code value.