feat: add metadata transfer for http header via spring.cloud.tencent.metadata.headers

[wenxuan70]

add metadata transfer for http header via spring.cloud.tencent.metadata.headers

PR Type

Feature

Describe what this PR does for and how you did.

Adding the issue link (#xxx) if possible.

fixes #1009

Note

Checklist

• Add information of this PR to CHANGELOG.md in root of project.
• Add documentation in javadoc or comment below the PR if necessary.

Checklist (Optional)

• Will pull request to branch of 2020.0.
• Will pull request to branch of 2022.0.

[codecov]

Codecov Report

Merging #1137 (751938c) into 2021.0 (d7d9a75) will increase coverage by 0.04%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##             2021.0    #1137      +/-   ##
============================================
+ Coverage     75.49%   75.53%   +0.04%     
- Complexity     1627     1635       +8     
============================================
  Files           258      258              
  Lines          5969     5989      +20     
  Branches        736      739       +3     
============================================
+ Hits           4506     4524      +18     
- Misses         1071     1074       +3     
+ Partials        392      391       -1     

Files	Coverage Δ
...t/cloud/common/metadata/MetadataContextHolder.java	81.39% <100.00%> (+4.65%)	⬆️
...t/cloud/common/metadata/StaticMetadataManager.java	89.61% <100.00%> (+0.92%)	⬆️
...ommon/metadata/config/MetadataLocalProperties.java	85.71% <100.00%> (+4.46%)	⬆️

... and 1 file with indirect coverage changes