PMM-10662: Add datapoints for MySQL

[dliakhov]

PMM-10662: Add datapoints for MySQL

Build: https://github.com/Percona-Lab/pmm-submodules/pull/2777

[codecov[bot]]

Codecov Report

Merging #1215 (d6fc74b) into main (7fce9dd) will not change coverage. The diff coverage is n/a.

:exclamation: Current head d6fc74b differs from pull request most recent head 46c86e3. Consider uploading reports for the commit 46c86e3 to get more accurate results

@@           Coverage Diff           @@
##             main    #1215   +/-   ##
=======================================
  Coverage   44.05%   44.05%           
=======================================
  Files         334      334           
  Lines       39790    39790           
=======================================
  Hits        17529    17529           
  Misses      20737    20737           
  Partials     1524     1524           

Flag	Coverage Δ
managed	44.94% <ø> (ø)

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