fix(#560): Fix MYSQL Conn string requirements

[hibare]

What this PR does / why we need it

This adds a function to ensure the connection string has tcp() wrapped around host part. This is required by the go-sql-driver but not required by atlas for DB migration,

Which issue(s) this PR fixes (optional)

(optional, using fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when the PR gets merged)*

Fixes #560

Acceptance Criteria Met

• Docs changes if needed
• Testing changes if needed
• All workflow checks passing (automatically enforced)
• All review conversations resolved (automatically enforced)
• DCO Sign-off

Special notes for your reviewer:

[kairoaraujo]

Hi @hibare,

Thank you for the PR.
Can we have just a unit test to avoid any regression in the future?

[codecov]

Codecov Report

Attention: Patch coverage is 75.00000% with 6 lines in your changes missing coverage. Please review.

Project coverage is 1.36%. Comparing base (a035c62) to head (cdd51b8).
Report is 353 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/metadatastorage/sqlstore/client.go	75.00%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #565       +/-   ##
==========================================
- Coverage   82.40%   1.36%   -81.04%     
==========================================
  Files          10     125      +115     
  Lines         358   34054    +33696     
==========================================
+ Hits          295     465      +170     
- Misses         43   33522    +33479     
- Partials       20      67       +47     

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[hibare]

Hi @hibare,

Thank you for the PR. Can we have just a unit test to avoid any regression in the future?

@kairoaraujo Added unit tests. Please let me know if anything is required.