Feature: support mysql 5.6

[gaius-qi]

Description

• Support mysql version < 5.7

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:

• Code compiles correctly.
• My code follows the code style of this project.
• 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.
• All new and existing tests passed.

[codecov-commenter]

Codecov Report

Merging #520 (5c046fd) into main (83cd262) will decrease coverage by 0.18%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main     #520      +/-   ##
==========================================
- Coverage   39.34%   39.15%   -0.19%     
==========================================
  Files          85       85              
  Lines        6438     6443       +5     
==========================================
- Hits         2533     2523      -10     
- Misses       3539     3555      +16     
+ Partials      366      365       -1     

Flag	Coverage Δ
e2etests	∅ <ø> (∅)
unittests	39.15% <0.00%> (-0.19%)	⬇️

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

Impacted Files	Coverage Δ
manager/config/config.go	0.00% <0.00%> (ø)
manager/permission/rbac/rbac.go	39.62% <0.00%> (ø)
client/daemon/peer/peertask_stream.go	55.07% <0.00%> (-2.54%)	⬇️
client/daemon/peer/peertask_base.go	32.24% <0.00%> (-0.71%)	⬇️