node: e2e: clarify findKubeletService
node: e2e: clarify findKubeletService

Add docstrings to findKubeletService and restartKubelet,
fix typos along the way.
xref: https://github.com/kubernetes/kubernetes/pull/105516#pullrequestreview-780230582

Signed-off-by: Francesco Romani <c7100b580e6017ef67482ace46578cdd2d2e0dfe@redhat.com>

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