Specify etcdctl version for livenessProbe
Specify etcdctl version for livenessProbe

`--command-timeout` is supported in `ETCDCTL_API` version 3 and it is NOT supported in `ETCDCTL_API` version 2. Up to etcd 3.3 (inclusive) default version of `ETCDCTL_API` was 2. This change explicitly defines used `ETCDCTL_API` and allows usage of etcd versions below 3.4.

kevin-wangzefeng/kubernetes,matthyx/kubernetes,ii/kubernetes,chestack/kubernetes,saad-ali/kubernetes,x13n/kubernetes,deads2k/kubernetes,jingxu97/kubernetes,MikeSpreitzer/kubernetes,jessfraz/kubernetes,mahak/kubernetes,weiwei04/kubernetes,tpepper/kubernetes,li-ang/kubernetes,BenTheElder/kubernetes,mosoft521/kubernetes,zhangmingld/kubernetes,Acidburn0zzz/kubernetes,micahhausler/kubernetes,ping035627/kubernetes,tengqm/kubernetes,sdminonne/kubernetes,tengqm/kubernetes,jagosan/kubernetes,hex108/kubernetes,fanzhangio/kubernetes,mengqiy/kubernetes,saad-ali/kubernetes,mahak/kubernetes,Clarifai/kubernetes,rnaveiras/kubernetes,alejandroEsc/kubernetes,jagosan/kubernetes,fabriziopandini/kubernetes,ping035627/kubernetes,MikeSpreitzer/kubernetes,weiwei04/kubernetes,rnaveiras/kubernetes,hex108/kubernetes,iameli/kubernetes,aledbf/kubernetes,micahhausler/kubernetes,k82cn/kubernetes,wongma7/kubernetes,jsafrane/kubernetes,andrewrynhard/kubernetes,jsafrane/kubernetes,andrewrynhard/kubernetes,kubernetes/kubernetes,dixudx/kubernetes,jingxu97/kubernetes,k82/kubernetes,li-ang/kubernetes,k82/kubernetes,lojies/kubernetes,krmayankk/kubernetes,saad-ali/kubernetes,mkumatag/kubernetes,kevin-wangzefeng/kubernetes,PiotrProkop/kubernetes,spzala/kubernetes,liggitt/kubernetes,nak3/kubernetes,ravilr/kubernetes,mengqiy/kubernetes,fabriziopandini/kubernetes,krmayankk/kubernetes,dixudx/kubernetes,carlory/kubernetes,kevin-wangzefeng/kubernetes,fabriziopandini/kubernetes,nckturner/kubernetes,shyamjvs/kubernetes,fanzhangio/kubernetes,jsafrane/kubernetes,tpepper/kubernetes,openshift/kubernetes,zhouhaibing089/kubernetes,deads2k/kubernetes,jackfrancis/kubernetes,mosoft521/kubernetes,cofyc/kubernetes,gnufied/kubernetes,jessfraz/kubernetes,nak3/kubernetes,zhangmingld/kubernetes,ping035627/kubernetes,iameli/kubernetes,dereknex/kubernetes,spzala/kubernetes,mkumatag/kubernetes,warmchang/kubernetes,k82cn/kubernetes,soltysh/kubernetes,ping035627/kubernetes,idvoretskyi/kubernetes,k82cn/kubernetes,rnaveiras/kubernetes,GulajavaMinistudio/kubernetes,BenTheElder/kubernetes,thockin/kubernetes,x13n/kubernetes,kevin-wangzefeng/kubernetes,jagosan/kubernetes,jingxu97/kubernetes,mengqiy/kubernetes,ii/kubernetes,k82/kubernetes,ravilr/kubernetes,alejandroEsc/kubernetes,k82/kubernetes,ravilr/kubernetes,x13n/kubernetes,bparees/kubernetes,feiskyer/kubernetes,PI-Victor/kubernetes,iameli/kubernetes,idvoretskyi/kubernetes,mikebrow/kubernetes,sdminonne/kubernetes,soltysh/kubernetes,nikhita/kubernetes,kevin-wangzefeng/kubernetes,MikeSpreitzer/kubernetes,krmayankk/kubernetes,feiskyer/kubernetes,csrwng/kubernetes,wongma7/kubernetes,zhouhaibing089/kubernetes,k82/kubernetes,mikebrow/kubernetes,openshift/kubernetes,bparees/kubernetes,humblec/kubernetes,kubernetes/kubernetes,deads2k/kubernetes,mosoft521/kubernetes,rrati/kubernetes,wongma7/kubernetes,sdminonne/kubernetes,roberthbailey/kubernetes,enj/kubernetes,bparees/kubernetes,mahak/kubernetes,PiotrProkop/kubernetes,jsafrane/kubernetes,ii/kubernetes,mengqiy/kubernetes,cofyc/kubernetes,idvoretskyi/kubernetes,Clarifai/kubernetes,spzala/kubernetes,roberthbailey/kubernetes,warmchang/kubernetes,nak3/kubernetes,dixudx/kubernetes,mikebrow/kubernetes,krmayankk/kubernetes,carlory/kubernetes,x13n/kubernetes,Clarifai/kubernetes,andrewrynhard/kubernetes,chestack/kubernetes,csrwng/kubernetes,saad-ali/kubernetes,jessfraz/kubernetes,jagosan/kubernetes,rnaveiras/kubernetes,nckturner/kubernetes,mikedanese/kubernetes,weiwei04/kubernetes,PiotrProkop/kubernetes,dereknex/kubernetes,bparees/kubernetes,nikhita/kubernetes,verult/kubernetes,verult/kubernetes,olivierlemasle/kubernetes,jackfrancis/kubernetes,aledbf/kubernetes,mkumatag/kubernetes,enj/kubernetes,li-ang/kubernetes,Acidburn0zzz/kubernetes,lojies/kubernetes,BenTheElder/kubernetes,warmchang/kubernetes,hex108/kubernetes,soltysh/kubernetes,matthyx/kubernetes,PI-Victor/kubernetes,monopole/kubernetes,monopole/kubernetes,x13n/kubernetes,li-ang/kubernetes,fanzhangio/kubernetes,weiwei04/kubernetes,krmayankk/kubernetes,alejandroEsc/kubernetes,linux-on-ibm-z/kubernetes,warmchang/kubernetes,verult/kubernetes,idvoretskyi/kubernetes,cofyc/kubernetes,GulajavaMinistudio/kubernetes,jackfrancis/kubernetes,bparees/kubernetes,thockin/kubernetes,k82cn/kubernetes,tpepper/kubernetes,andrewrynhard/kubernetes,PI-Victor/kubernetes,openshift/kubernetes,dixudx/kubernetes,chestack/kubernetes,chrislovecnm/kubernetes,alejandroEsc/kubernetes,ravilr/kubernetes,PI-Victor/kubernetes,matthyx/kubernetes,olivierlemasle/kubernetes,soltysh/kubernetes,csrwng/kubernetes,hex108/kubernetes,feiskyer/kubernetes,nak3/kubernetes,liggitt/kubernetes,spzala/kubernetes,nikhita/kubernetes,jingxu97/kubernetes,cofyc/kubernetes,roberthbailey/kubernetes,dims/kubernetes,olivierlemasle/kubernetes,tpepper/kubernetes,rafax/kubernetes,jessfraz/kubernetes,verb/kubernetes,jackfrancis/kubernetes,shyamjvs/kubernetes,enj/kubernetes,cofyc/kubernetes,mikedanese/kubernetes,openshift/kubernetes,wongma7/kubernetes,Acidburn0zzz/kubernetes,tpepper/kubernetes,nak3/kubernetes,mahak/kubernetes,Clarifai/kubernetes,lojies/kubernetes,jingxu97/kubernetes,dims/kubernetes,tengqm/kubernetes,cblecker/kubernetes,tpepper/kubernetes,nckturner/kubernetes,lojies/kubernetes,BenTheElder/kubernetes,PiotrProkop/kubernetes,mosoft521/kubernetes,fabriziopandini/kubernetes,jessfraz/kubernetes,liggitt/kubernetes,Acidburn0zzz/kubernetes,verult/kubernetes,hex108/kubernetes,dereknex/kubernetes,aledbf/kubernetes,li-ang/kubernetes,mikebrow/kubernetes,deads2k/kubernetes,csrwng/kubernetes,monopole/kubernetes,mahak/kubernetes,zhouhaibing089/kubernetes,dereknex/kubernetes,linux-on-ibm-z/kubernetes,mikedanese/kubernetes,nckturner/kubernetes,liggitt/kubernetes,rrati/kubernetes,mengqiy/kubernetes,k82cn/kubernetes,andrewrynhard/kubernetes,micahhausler/kubernetes,saad-ali/kubernetes,mkumatag/kubernetes,GulajavaMinistudio/kubernetes,rrati/kubernetes,feiskyer/kubernetes,nikhita/kubernetes,verb/kubernetes,csrwng/kubernetes,mkumatag/kubernetes,krmayankk/kubernetes,iameli/kubernetes,zhouhaibing089/kubernetes,gnufied/kubernetes,BenTheElder/kubernetes,dims/kubernetes,aledbf/kubernetes,zhangmingld/kubernetes,monopole/kubernetes,warmchang/kubernetes,jackfrancis/kubernetes,MikeSpreitzer/kubernetes,shyamjvs/kubernetes,micahhausler/kubernetes,chrislovecnm/kubernetes,PiotrProkop/kubernetes,ping035627/kubernetes,cblecker/kubernetes,Clarifai/kubernetes,liggitt/kubernetes,PI-Victor/kubernetes,weiwei04/kubernetes,monopole/kubernetes,tengqm/kubernetes,PI-Victor/kubernetes,carlory/kubernetes,ii/kubernetes,fabriziopandini/kubernetes,chrislovecnm/kubernetes,chrislovecnm/kubernetes,kubernetes/kubernetes,tengqm/kubernetes,humblec/kubernetes,humblec/kubernetes,idvoretskyi/kubernetes,chrislovecnm/kubernetes,jsafrane/kubernetes,shyamjvs/kubernetes,dixudx/kubernetes,Acidburn0zzz/kubernetes,Clarifai/kubernetes,cblecker/kubernetes,deads2k/kubernetes,GulajavaMinistudio/kubernetes,gnufied/kubernetes,rafax/kubernetes,chrislovecnm/kubernetes,jagosan/kubernetes,idvoretskyi/kubernetes,rrati/kubernetes,soltysh/kubernetes,rnaveiras/kubernetes,spzala/kubernetes,matthyx/kubernetes,wongma7/kubernetes,rafax/kubernetes,chestack/kubernetes,alejandroEsc/kubernetes,verb/kubernetes,iameli/kubernetes,zhangmingld/kubernetes,verb/kubernetes,ii/kubernetes,carlory/kubernetes,gnufied/kubernetes,fanzhangio/kubernetes,sdminonne/kubernetes,carlory/kubernetes,shyamjvs/kubernetes,hex108/kubernetes,weiwei04/kubernetes,ravilr/kubernetes,dereknex/kubernetes,nikhita/kubernetes,cblecker/kubernetes,fanzhangio/kubernetes,olivierlemasle/kubernetes,kubernetes/kubernetes,rrati/kubernetes,zhangmingld/kubernetes,thockin/kubernetes,chestack/kubernetes,dims/kubernetes,humblec/kubernetes,lojies/kubernetes,aledbf/kubernetes,nckturner/kubernetes,verult/kubernetes,thockin/kubernetes,olivierlemasle/kubernetes,kubernetes/kubernetes,GulajavaMinistudio/kubernetes,mikedanese/kubernetes,verb/kubernetes,mikebrow/kubernetes,x13n/kubernetes,cofyc/kubernetes,thockin/kubernetes,micahhausler/kubernetes,zhouhaibing089/kubernetes,mosoft521/kubernetes,mikedanese/kubernetes,gnufied/kubernetes,dereknex/kubernetes,roberthbailey/kubernetes,dims/kubernetes,linux-on-ibm-z/kubernetes,MikeSpreitzer/kubernetes,Acidburn0zzz/kubernetes,linux-on-ibm-z/kubernetes,feiskyer/kubernetes,saad-ali/kubernetes,humblec/kubernetes,cblecker/kubernetes,linux-on-ibm-z/kubernetes,rafax/kubernetes,andrewrynhard/kubernetes,matthyx/kubernetes,fanzhangio/kubernetes,openshift/kubernetes,sdminonne/kubernetes,nak3/kubernetes,enj/kubernetes,enj/kubernetes,verult/kubernetes,roberthbailey/kubernetes,zhangmingld/kubernetes