vtctld2: Serve index.html for unknown paths.
vtctld2: Serve index.html for unknown paths.

This is necessary for the path-based router to work.

tirsen/vitess,pivanof/vitess,tirsen/vitess,davygeek/vitess,enisoc/vitess,dumbunny/vitess,pivanof/vitess,enisoc/vitess,tirsen/vitess,erzel/vitess,rnavarro/vitess,davygeek/vitess,mapbased/vitess,mattharden/vitess,pivanof/vitess,mapbased/vitess,mahak/vitess,pivanof/vitess,mapbased/vitess,dcadevil/vitess,dcadevil/vitess,enisoc/vitess,sougou/vitess,mapbased/vitess,enisoc/vitess,enisoc/vitess,pivanof/vitess,mapbased/vitess,tirsen/vitess,rnavarro/vitess,mattharden/vitess,tinyspeck/vitess,rnavarro/vitess,alainjobart/vitess,alainjobart/vitess,applift/vitess,mahak/vitess,dumbunny/vitess,sougou/vitess,enisoc/vitess,mattharden/vitess,mahak/vitess,mattharden/vitess,alainjobart/vitess,enisoc/vitess,vitessio/vitess,vitessio/vitess,applift/vitess,tirsen/vitess,erzel/vitess,mapbased/vitess,erzel/vitess,sougou/vitess,erzel/vitess,HubSpot/vitess,davygeek/vitess,rnavarro/vitess,pivanof/vitess,dumbunny/vitess,mahak/vitess,applift/vitess,davygeek/vitess,sougou/vitess,vitessio/vitess,tinyspeck/vitess,mattharden/vitess,rnavarro/vitess,sougou/vitess,HubSpot/vitess,HubSpot/vitess,dcadevil/vitess,applift/vitess,mahak/vitess,pivanof/vitess,erzel/vitess,applift/vitess,dumbunny/vitess,dumbunny/vitess,HubSpot/vitess,pivanof/vitess,davygeek/vitess,alainjobart/vitess,mattharden/vitess,erzel/vitess,rnavarro/vitess,HubSpot/vitess,dumbunny/vitess,vitessio/vitess,applift/vitess,tirsen/vitess,mattharden/vitess,davygeek/vitess,HubSpot/vitess,alainjobart/vitess,applift/vitess,sougou/vitess,dcadevil/vitess,mahak/vitess,dcadevil/vitess,dumbunny/vitess,alainjobart/vitess,HubSpot/vitess,dcadevil/vitess,vitessio/vitess,tirsen/vitess,sougou/vitess,alainjobart/vitess,alainjobart/vitess,mapbased/vitess,HubSpot/vitess,mattharden/vitess,applift/vitess,tinyspeck/vitess,erzel/vitess,applift/vitess,rnavarro/vitess,mapbased/vitess,mattharden/vitess,davygeek/vitess,mahak/vitess,mapbased/vitess,mattharden/vitess,erzel/vitess,dumbunny/vitess,applift/vitess,vitessio/vitess,tinyspeck/vitess,rnavarro/vitess,tirsen/vitess,tinyspeck/vitess,tinyspeck/vitess,tirsen/vitess,tinyspeck/vitess,pivanof/vitess,vitessio/vitess,erzel/vitess,sougou/vitess,vitessio/vitess,dumbunny/vitess,mahak/vitess,dumbunny/vitess,mapbased/vitess,rnavarro/vitess,dcadevil/vitess,erzel/vitess