add Locale serialize&deserialize support

[nzomkxia]

What is the purpose of the change

fix #906 and add deserialize support

Brief changelog

XXXXX

Verifying this change

XXXXX

Follow this checklist to help us incorporate your contribution quickly and easily:

• 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.
• Format the pull request title like [Dubbo-XXX] Fix UnknownException when host config not exist #XXX. Each commit in the pull request should have a meaningful subject line and body.
• Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
• Write necessary unit-test to verify your logic correction, more mock a little better when cross module dependency exist. If the new feature or significant change is committed, please remember to add integration-test in test module.
• Run mvn clean install -DskipTests & mvn clean test-compile failsafe:integration-test to make sure unit-test and integration-test pass.
• If this contribution is large, please follow the Software Donation Guide.

[codecov-io]

Codecov Report

Merging #1760 into master will decrease coverage by 0.02%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #1760      +/-   ##
============================================
- Coverage     37.95%   37.93%   -0.03%     
+ Complexity     4026     4022       -4     
============================================
  Files           618      618              
  Lines         29728    29728              
  Branches       5242     5242              
============================================
- Hits          11283    11277       -6     
- Misses        16607    16609       +2     
- Partials       1838     1842       +4

Impacted Files	Coverage Δ	Complexity Δ
...rpc/protocol/dubbo/telnet/InvokeTelnetHandler.java	51.89% <0%> (-3.8%)	11% <0%> (-2%)
...ba/dubbo/remoting/transport/netty/NettyServer.java	67.27% <0%> (-3.64%)	8% <0%> (-1%)
...baba/dubbo/remoting/transport/mina/MinaClient.java	57.81% <0%> (-1.57%)	8% <0%> (-1%)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 63a2569...e27d8d7. Read the comment docs.