Auto-detect VT_MYSQL_ROOT, remove cruft#5488

Merged

sougou merged 5 commits intovitessio:masterfrom

planetscale:morgo-rm-mysql-flavor

Dec 2, 2019

Commits on Nov 28, 2019

Remove unused cruft
morgo
committed

Commits on Nov 29, 2019

Commits on Dec 1, 2019