tabletserver: Fix bug that QPS were drawn in the reverse order.
tabletserver: Fix bug that QPS were drawn in the reverse order.

Because of this problem old QPS rates never moved from the right to the left. Instead, the least recent rates were shown as the most recent ones.

erzel/vitess,dcadevil/vitess,pivanof/vitess,alainjobart/vitess,davygeek/vitess,enisoc/vitess,dumbunny/vitess,mahak/vitess,pivanof/vitess,rnavarro/vitess,dcadevil/vitess,mapbased/vitess,tinyspeck/vitess,tinyspeck/vitess,AndyDiamondstein/vitess,tirsen/vitess,sougou/vitess,sougou/vitess,erzel/vitess,aaijazi/vitess,alainjobart/vitess,erzel/vitess,AndyDiamondstein/vitess,erzel/vitess,tirsen/vitess,sougou/vitess,sougou/vitess,enisoc/vitess,tirsen/vitess,dcadevil/vitess,dcadevil/vitess,vitessio/vitess,alainjobart/vitess,guokeno0/vitess,vitessio/vitess,applift/vitess,mapbased/vitess,rnavarro/vitess,mahak/vitess,mattharden/vitess,davygeek/vitess,davygeek/vitess,aaijazi/vitess,sougou/vitess,rnavarro/vitess,applift/vitess,vitessio/vitess,pivanof/vitess,mattharden/vitess,tinyspeck/vitess,guokeno0/vitess,alainjobart/vitess,dumbunny/vitess,dumbunny/vitess,AndyDiamondstein/vitess,vitessio/vitess,applift/vitess,AndyDiamondstein/vitess,erzel/vitess,applift/vitess,alainjobart/vitess,mattharden/vitess,mapbased/vitess,HubSpot/vitess,rnavarro/vitess,davygeek/vitess,applift/vitess,enisoc/vitess,rnavarro/vitess,alainjobart/vitess,davygeek/vitess,dumbunny/vitess,applift/vitess,aaijazi/vitess,tirsen/vitess,dumbunny/vitess,mattharden/vitess,mattharden/vitess,rnavarro/vitess,guokeno0/vitess,dumbunny/vitess,mattharden/vitess,alainjobart/vitess,HubSpot/vitess,mattharden/vitess,mattharden/vitess,alainjobart/vitess,aaijazi/vitess,tirsen/vitess,HubSpot/vitess,rnavarro/vitess,erzel/vitess,sougou/vitess,dumbunny/vitess,HubSpot/vitess,vitessio/vitess,pivanof/vitess,guokeno0/vitess,dumbunny/vitess,pivanof/vitess,applift/vitess,davygeek/vitess,enisoc/vitess,pivanof/vitess,rnavarro/vitess,dcadevil/vitess,aaijazi/vitess,dcadevil/vitess,davygeek/vitess,sougou/vitess,tinyspeck/vitess,pivanof/vitess,tinyspeck/vitess,erzel/vitess,enisoc/vitess,mapbased/vitess,AndyDiamondstein/vitess,HubSpot/vitess,mahak/vitess,tirsen/vitess,vitessio/vitess,mapbased/vitess,tirsen/vitess,vitessio/vitess,erzel/vitess,erzel/vitess,guokeno0/vitess,HubSpot/vitess,AndyDiamondstein/vitess,mahak/vitess,tirsen/vitess,applift/vitess,dcadevil/vitess,dumbunny/vitess,pivanof/vitess,aaijazi/vitess,sougou/vitess,enisoc/vitess,applift/vitess,mapbased/vitess,enisoc/vitess,mahak/vitess,aaijazi/vitess,pivanof/vitess,rnavarro/vitess,HubSpot/vitess,mahak/vitess,vitessio/vitess,guokeno0/vitess,guokeno0/vitess,mattharden/vitess,dumbunny/vitess,tinyspeck/vitess,tinyspeck/vitess,AndyDiamondstein/vitess,mattharden/vitess,erzel/vitess,mahak/vitess,HubSpot/vitess,mapbased/vitess,guokeno0/vitess,AndyDiamondstein/vitess,mapbased/vitess,aaijazi/vitess,applift/vitess,guokeno0/vitess,mapbased/vitess,aaijazi/vitess,tirsen/vitess,mahak/vitess,mapbased/vitess,AndyDiamondstein/vitess