add integration test validating that converting a Service to ExternalName results in the field being dropped on read
add integration test validating that converting a Service to ExternalName results in the field being dropped on read

Signed-off-by: Andrew Sy Kim <216147b618cb827f522f086e90f58ea14ddeaac5@gmail.com>

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