Adds the TabletAlias to the vars page json.
Adds the TabletAlias to the vars page json.

Signed-off-by: Michael Pawliszyn <192013a11929a8c9d1c2f8746a092a95b76938fb@squareup.com>

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