chore: only upload metrics on mysql

[kevwan]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 13 lines in your changes missing coverage. Please review.

Project coverage is 94.56%. Comparing base (8690859) to head (d85b179).
Report is 225 commits behind head on master.

Files with missing lines	Patch %	Lines
core/stores/sqlx/sqlmanager.go	0.00%	13 Missing ⚠️

Additional details and impacted files

Files with missing lines	Coverage Δ
core/stores/sqlx/sqlmanager.go	47.72% <0.00%> (-20.02%)	⬇️

... and 8 files with indirect coverage changes