fix bug when displaying a shard with ghost aliases in the replication graph
fix bug when displaying a shard with ghost aliases in the replication graph

tjyang/vitess,vitessio/vitess,HeisenbergUncertain/vitess,tirsen/vitess,mahak/vitess,netroby/vitess,ngaut/vitess,fengshao0907/vitess,tjyang/vitess,HeisenbergUncertain/vitess,michael-berlin/vitess,nurblieh/vitess,michael-berlin/vitess,michael-berlin/vitess,applift/vitess,cloudbearings/vitess,dcadevil/vitess,dcadevil/vitess,davygeek/vitess,nurblieh/vitess,ptomasroos/vitess,skyportsystems/vitess,cgvarela/vitess,yangzhongj/vitess,applift/vitess,kmiku7/vitess-annotated,dumbunny/vitess,yaoshengzhe/vitess,sougou/vitess,aaijazi/vitess,alainjobart/vitess,skyportsystems/vitess,vitessio/vitess,ptomasroos/vitess,dcadevil/vitess,netroby/vitess,sougou/vitess,rnavarro/vitess,dumbunny/vitess,vitessio/vitess,anusornc/vitess,cgvarela/vitess,ptomasroos/vitess,fengshao0907/vitess,HubSpot/vitess,CERN-Stage-3/vitess,fengshao0907/vitess,yangzhongj/vitess,apmichaud/vitess-apm,dcadevil/vitess,applift/vitess,CERN-Stage-3/vitess,mlc0202/vitess,pivanof/vitess,mattharden/vitess,SDHM/vitess,atyenoria/vitess,HubSpot/vitess,xgwubin/vitess,kmiku7/vitess-annotated,kuipertan/vitess,applift/vitess,rnavarro/vitess,enisoc/vitess,cloudbearings/vitess,cloudbearings/vitess,fengshao0907/vitess,anusornc/vitess,atyenoria/vitess,AndyDiamondstein/vitess,guokeno0/vitess,CERN-Stage-3/vitess,fengshao0907/vitess,mapbased/vitess,mapbased/vitess,yaoshengzhe/vitess,applift/vitess,kuipertan/vitess,ptomasroos/vitess,davygeek/vitess,dcadevil/vitess,tjyang/vitess,pivanof/vitess,netroby/vitess,HubSpot/vitess,mattharden/vitess,anusornc/vitess,kmiku7/vitess-annotated,pivanof/vitess,yangzhongj/vitess,tirsen/vitess,aaijazi/vitess,kmiku7/vitess-annotated,cgvarela/vitess,vitessio/vitess,mapbased/vitess,skyportsystems/vitess,applift/vitess,mahak/vitess,mahak/vitess,sougou/vitess,dumbunny/vitess,kuipertan/vitess,cloudbearings/vitess,CERN-Stage-3/vitess,pivanof/vitess,yangzhongj/vitess,enisoc/vitess,sougou/vitess,apmichaud/vitess-apm,skyportsystems/vitess,cloudbearings/vitess,ngaut/vitess,nurblieh/vitess,mlc0202/vitess,kmiku7/vitess-annotated,rnavarro/vitess,erzel/vitess,yangzhongj/vitess,rnavarro/vitess,guokeno0/vitess,tinyspeck/vitess,tinyspeck/vitess,mattharden/vitess,ngaut/vitess,mlc0202/vitess,SDHM/vitess,apmichaud/vitess-apm,apmichaud/vitess-apm,AndyDiamondstein/vitess,SDHM/vitess,mattharden/vitess,HubSpot/vitess,mlc0202/vitess,anusornc/vitess,HubSpot/vitess,HeisenbergUncertain/vitess,aaijazi/vitess,tirsen/vitess,vitessio/vitess,HeisenbergUncertain/vitess,AndyDiamondstein/vitess,kuipertan/vitess,xgwubin/vitess,mattharden/vitess,xgwubin/vitess,mlc0202/vitess,atyenoria/vitess,skyportsystems/vitess,CERN-Stage-3/vitess,ngaut/vitess,dcadevil/vitess,xgwubin/vitess,netroby/vitess,applift/vitess,erzel/vitess,fengshao0907/vitess,pivanof/vitess,nurblieh/vitess,guokeno0/vitess,kuipertan/vitess,applift/vitess,tirsen/vitess,yangzhongj/vitess,aaijazi/vitess,cgvarela/vitess,mapbased/vitess,aaijazi/vitess,kmiku7/vitess-annotated,yaoshengzhe/vitess,erzel/vitess,cgvarela/vitess,HubSpot/vitess,davygeek/vitess,mapbased/vitess,yangzhongj/vitess,guokeno0/vitess,michael-berlin/vitess,erzel/vitess,yaoshengzhe/vitess,sougou/vitess,apmichaud/vitess-apm,cloudbearings/vitess,anusornc/vitess,dumbunny/vitess,fengshao0907/vitess,tjyang/vitess,netroby/vitess,cgvarela/vitess,erzel/vitess,mapbased/vitess,sougou/vitess,dumbunny/vitess,tinyspeck/vitess,nurblieh/vitess,enisoc/vitess,tjyang/vitess,alainjobart/vitess,rnavarro/vitess,rnavarro/vitess,mahak/vitess,nurblieh/vitess,anusornc/vitess,alainjobart/vitess,HubSpot/vitess,atyenoria/vitess,xgwubin/vitess,SDHM/vitess,atyenoria/vitess,michael-berlin/vitess,AndyDiamondstein/vitess,aaijazi/vitess,mattharden/vitess,tirsen/vitess,alainjobart/vitess,aaijazi/vitess,rnavarro/vitess,tirsen/vitess,ptomasroos/vitess,enisoc/vitess,alainjobart/vitess,vitessio/vitess,yaoshengzhe/vitess,atyenoria/vitess,tjyang/vitess,dumbunny/vitess,kmiku7/vitess-annotated,ptomasroos/vitess,applift/vitess,skyportsystems/vitess,AndyDiamondstein/vitess,netroby/vitess,pivanof/vitess,mattharden/vitess,AndyDiamondstein/vitess,erzel/vitess,cgvarela/vitess,enisoc/vitess,mlc0202/vitess,dumbunny/vitess,netroby/vitess,ptomasroos/vitess,tirsen/vitess,cgvarela/vitess,xgwubin/vitess,pivanof/vitess,xgwubin/vitess,cloudbearings/vitess,mlc0202/vitess,fengshao0907/vitess,vitessio/vitess,sougou/vitess,anusornc/vitess,erzel/vitess,michael-berlin/vitess,tinyspeck/vitess,cgvarela/vitess,skyportsystems/vitess,mahak/vitess,dcadevil/vitess,skyportsystems/vitess,cloudbearings/vitess,michael-berlin/vitess,nurblieh/vitess,atyenoria/vitess,anusornc/vitess,alainjobart/vitess,tjyang/vitess,guokeno0/vitess,vitessio/vitess,tjyang/vitess,mahak/vitess,erzel/vitess,davygeek/vitess,kuipertan/vitess,skyportsystems/vitess,anusornc/vitess,mattharden/vitess,AndyDiamondstein/vitess,SDHM/vitess,kuipertan/vitess,yangzhongj/vitess,applift/vitess,mapbased/vitess,alainjobart/vitess,mattharden/vitess,netroby/vitess,aaijazi/vitess,tjyang/vitess,dumbunny/vitess,sougou/vitess,mattharden/vitess,guokeno0/vitess,mlc0202/vitess,yaoshengzhe/vitess,mahak/vitess,ngaut/vitess,SDHM/vitess,HubSpot/vitess,SDHM/vitess,yaoshengzhe/vitess,alainjobart/vitess,guokeno0/vitess,cloudbearings/vitess,nurblieh/vitess,dumbunny/vitess,guokeno0/vitess,SDHM/vitess,tinyspeck/vitess,ptomasroos/vitess,rnavarro/vitess,mapbased/vitess,atyenoria/vitess,tirsen/vitess,netroby/vitess,mapbased/vitess,enisoc/vitess,rnavarro/vitess,michael-berlin/vitess,pivanof/vitess,davygeek/vitess,SDHM/vitess,aaijazi/vitess,xgwubin/vitess,davygeek/vitess,erzel/vitess,tinyspeck/vitess,kmiku7/vitess-annotated,kuipertan/vitess,kuipertan/vitess,kmiku7/vitess-annotated,dumbunny/vitess,tirsen/vitess,yangzhongj/vitess,fengshao0907/vitess,mahak/vitess,erzel/vitess,AndyDiamondstein/vitess,yaoshengzhe/vitess,mapbased/vitess,ptomasroos/vitess,michael-berlin/vitess,guokeno0/vitess,davygeek/vitess,atyenoria/vitess,tinyspeck/vitess,AndyDiamondstein/vitess,nurblieh/vitess,yaoshengzhe/vitess,pivanof/vitess,mlc0202/vitess,xgwubin/vitess,enisoc/vitess