feat: peer information is changed from being stored in metrics to being stored in mysql

[gaius-qi]

Description

1. Add peer table in mysql in manager.
2. Add peer query api in manager.
3. Remove peer total metrics in manager.

Related Issue

Motivation and Context

Screenshots (if appropriate)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation Update (if none of the other choices apply)

Checklist

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.

[codecov]

Codecov Report

Merging #2654 (e778f3f) into main (bf6e08b) will increase coverage by 0.05%.
Report is 1 commits behind head on main.
The diff coverage is 50.00%.

@@            Coverage Diff             @@
##             main    #2654      +/-   ##
==========================================
+ Coverage   51.67%   51.73%   +0.05%     
==========================================
  Files         158      157       -1     
  Lines       21117    21088      -29     
==========================================
- Hits        10913    10910       -3     
+ Misses       9572     9547      -25     
+ Partials      632      631       -1     

Flag	Coverage Δ
Object-compatibility-e2etests	?
e2etests	?
unittests	51.73% <50.00%> (+0.05%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
manager/metrics/metrics.go	100.00% <ø> (ø)
manager/rpcserver/manager_server_v1.go	0.00% <ø> (ø)
manager/rpcserver/manager_server_v2.go	0.00% <ø> (ø)
manager/rpcserver/rpcserver.go	0.00% <0.00%> (ø)
manager/config/config.go	96.41% <100.00%> (-0.02%)	⬇️

... and 4 files with indirect coverage changes

[hyy0322]

lgtm