Return early if zk topo is not available in vtctld zk plugin.
Return early if zk topo is not available in vtctld zk plugin.

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