make the number of instances configurable, default to existing behavior of one per AZ
make the number of instances configurable, default to existing behavior of one per AZ

Livit/Livit.Learn.EdX.configuration,Carlos2005/configuration,usernamenumber/configuration,CredoReference/configuration,arbrandes/edx-configuration,Carlos2005/configuration,marcore/configuration,Pieros/configuration,Stanford-Online/configuration,hastexo/edx-configuration,hks-epod/configuration,glengal/configuration,arbrandes/edx-configuration,gashac03/ubuntu,arifsetiawan/configuration,IndonesiaX/configuration,nikolas/configuration,EDUlib/configuration,kursitet/configuration,hks-epod/configuration,arifsetiawan/configuration,lgfa29/configuration,michaelsteiner19/open-edx-configuration,omarkhan/configuration,alu042/configuration,joshhu/configuration,edx/configuration,edx/configuration,hks-epod/configuration,zhengjunwei/configuration,Stanford-Online/configuration,edx/configuration,leansoft/configuration,lgfa29/configuration,openfun/configuration,EDUlib/configuration,stvstnfrd/configuration,hks-epod/configuration,marcore/configuration,gsehub/configuration,joshhu/configuration,nunpa/configuration,hastexo/edx-configuration,hastexo/edx-configuration,appsembler/configuration,kencung/configuration,Pieros/configuration,usernamenumber/configuration,Livit/Livit.Learn.EdX.configuration,Softmotions/configuration,mitodl/configuration,fghaas/edx-configuration,usernamenumber/configuration,AlfiyaZi/configuration,joshhu/configuration,arifsetiawan/configuration,pobrejuanito/configuration,AlfiyaZi/configuration,armaan/edx-configuration,proversity-org/configuration,pobrejuanito/configuration,alu042/configuration,Softmotions/configuration,mitodl/configuration,xiangjf/configuration,mitodl/configuration,nikolas/configuration,armaan/edx-configuration,open-craft/configuration,marcore/configuration,stvstnfrd/configuration,Stanford-Online/configuration,openfun/configuration,CredoReference/configuration,lgfa29/configuration,EDUlib/configuration,rue89-tech/configuration,jorgeomarmh/configuration,antshin72/configuration,kursitet/configuration,AlfiyaZi/configuration,antshin72/configuration,kursitet/configuration,Pieros/configuration,open-craft/configuration,open-craft/configuration,leansoft/configuration,gsehub/configuration,EDUlib/configuration,jorgeomarmh/configuration,pobrejuanito/configuration,glengal/configuration,omarkhan/configuration,proversity-org/configuration,zhengjunwei/configuration,eduStack/configuration,appsembler/configuration,Pieros/configuration,EDUlib/configuration,antoviaque/configuration,jorgeomarmh/configuration,xiangjf/configuration,AlfiyaZi/configuration,hks-epod/configuration,lgfa29/configuration,4eek/configuration,usernamenumber/configuration,hastexo/edx-configuration-old,leansoft/configuration,appsembler/configuration,antshin72/configuration,omarkhan/configuration,hastexo/edx-configuration-old,antoviaque/configuration,4eek/configuration,IndonesiaX/configuration,fghaas/edx-configuration,kursitet/configuration,zhengjunwei/configuration,arbrandes/edx-configuration,zhengjunwei/configuration,eduStack/configuration,gsehub/configuration,hastexo/edx-configuration-old,nikolas/configuration,proversity-org/configuration,antshin72/configuration,arifsetiawan/configuration,michaelsteiner19/open-edx-configuration,edx/configuration,Softmotions/configuration,gashac03/ubuntu,jorgeomarmh/configuration,stvstnfrd/configuration,4eek/configuration,antoviaque/configuration,IndonesiaX/configuration,rue89-tech/configuration,armaan/edx-configuration,glengal/configuration,fghaas/edx-configuration,michaelsteiner19/open-edx-configuration,hastexo/edx-configuration,Livit/Livit.Learn.EdX.configuration,omarkhan/configuration,mitodl/configuration,rue89-tech/configuration,arbrandes/edx-configuration,Softmotions/configuration,joshhu/configuration,nunpa/configuration,stvstnfrd/configuration,hastexo/edx-configuration,xiangjf/configuration,proversity-org/configuration,hastexo/edx-configuration-old,xiangjf/configuration,rue89-tech/configuration,4eek/configuration,stvstnfrd/configuration,Livit/Livit.Learn.EdX.configuration,Stanford-Online/configuration,nunpa/configuration,nikolas/configuration,openfun/configuration,gashac03/ubuntu,armaan/edx-configuration,leansoft/configuration,openfun/configuration,appsembler/configuration,CredoReference/configuration,fghaas/edx-configuration,alu042/configuration,CredoReference/configuration,marcore/configuration,kencung/configuration,open-craft/configuration,nunpa/configuration,kencung/configuration,rue89-tech/configuration,eduStack/configuration,alu042/configuration,glengal/configuration,gsehub/configuration,proversity-org/configuration,Carlos2005/configuration,Carlos2005/configuration,IndonesiaX/configuration,michaelsteiner19/open-edx-configuration,antoviaque/configuration,gsehub/configuration,pobrejuanito/configuration,gashac03/ubuntu,arbrandes/edx-configuration,kencung/configuration,Stanford-Online/configuration