Follow this checklist to help us incorporate your contribution quickly and easily. Notice, it would be helpful if you could finish the following 5 checklist(the last one is not necessary)before request the community to review your PR.
[x] Make sure there is a Github issue filed for the change (usually before you start working on it). Trivial changes like typos do not require a Github issue. Your pull request should address just this issue, without pulling in other changes - one PR resolves one issue.
[x] Format the pull request title like [ISSUE #123] Fix UnknownException when host config not exist. Each commit in the pull request should have a meaningful subject line and body.
[x] Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
[x] Write necessary unit-test(over 80% coverage) to verify your logic correction, more mock a little better when a cross-module dependency exists.
What is the purpose of the change
traceDispatcher在初始化的时候，并没有初始化生产者,初始化一个真正的producer来发送trace信息， 而不是直接调用通信层的invokeSync。[issues https://github.com/apache/rocketmq-client-go/issues/1007]
Brief changelog
fix trace use producer instead client
Verifying this change
XXXX
Follow this checklist to help us incorporate your contribution quickly and easily. Notice,
it would be helpful if you could finish the following 5 checklist(the last one is not necessary)before request the community to review your PR.[ISSUE #123] Fix UnknownException when host config not exist. Each commit in the pull request should have a meaningful subject line and body.