adding vars_files for nginx
adding vars_files for nginx

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x-configuration,sudheerchintala/LearnEra-Configuration,hastexo/edx-configuration-old,IndonesiaX/configuration,arbrandes/edx-configuration,Livit/Livit.Learn.EdX.configuration,Stanford-Online/configuration,knehez/configuration,chudaol/configuration,kencung/configuration,michaelsteiner19/open-edx-configuration,usernamenumber/configuration,antoviaque/configuration,hmcmooc/ec2-edx-configuration,appsembler/configuration,jp-bpl/configuration,stvstnfrd/configuration,xiangjf/configuration,knehez/configuration,nikolas/configuration,chenshuchuan/configuration,chenshuchuan/configuration,EDUlib/configuration,omarkhan/configuration,apigee/edx-configuration,hastexo/edx-configuration-old,gashac03/ubuntu,hks-epod/configuration,knehez/configuration,chenshuchuan/configuration,IONISx/edx-configuration,michaelsteiner19/open-edx-configuration,zhengjunwei/configuration,cyanna/configuration,Stanford-Online/configuration,appsembler/configuration,kencung/configuration,knehez/configuration,IndonesiaX/configuration,antshin72/configuration,IndonesiaX/configuration,eduStack/configuration,armaan/edx-configuration,open-craft/configuration,jp-bpl/configuration,negritobomb/edxplat,mitodl/configuration,alu042/configuration,chudaol/configuration,open-craft/configuration,4eek/configuration,nttks/configuration,hks-epod/configuration,nunpa/configuration,CredoReference/configuration,arifsetiawan/configuration,rue89-tech/configuration,usernamenumber/configuration,stvstnfrd/configuration,Stanford-Online/configuration,xiangjf/configuration,xiangjf/configuration,joshhu/configuration,LearnEra/LearnEra-Configuration,pedrorib/istx,open-craft/configuration,joshhu/configuration,4eek/configuration,ovnicraft/evex-configuration,leansoft/configuration,Livit/Livit.Learn.EdX.configuration,IONISx/edx-configuration,proversity-org/configuration,stvstnfrd/configuration