mysql: add password tests for AuthServerStatic
mysql: add password tests for AuthServerStatic

Signed-off-by: Javi Fontan <bd6f2f0212e303b54f36d84bb19ae60fa8e400a6@gmail.com>

dcadevil/vitess,vitessio/vitess,tinyspeck/vitess,vitessio/vitess,davygeek/vitess,HubSpot/vitess,mahak/vitess,vitessio/vitess,mahak/vitess,davygeek/vitess,enisoc/vitess,HubSpot/vitess,dcadevil/vitess,mahak/vitess,HubSpot/vitess,vitessio/vitess,dcadevil/vitess,dcadevil/vitess,tinyspeck/vitess,enisoc/vitess,vitessio/vitess,vitessio/vitess,tinyspeck/vitess,HubSpot/vitess,davygeek/vitess,mahak/vitess,HubSpot/vitess,davygeek/vitess,HubSpot/vitess,davygeek/vitess,vitessio/vitess,tinyspeck/vitess,mahak/vitess,davygeek/vitess,davygeek/vitess,mahak/vitess,tinyspeck/vitess,HubSpot/vitess,HubSpot/vitess,enisoc/vitess,dcadevil/vitess,enisoc/vitess,mahak/vitess,vitessio/vitess,tinyspeck/vitess,dcadevil/vitess,dcadevil/vitess,enisoc/vitess,mahak/vitess,tinyspeck/vitess,enisoc/vitess,enisoc/vitess