Revert to ansible 1.5.5 due to a template bug.
Revert to ansible 1.5.5 due to a template bug.

See https://github.com/ansible/ansible/issues/9362

arbrandes/edx-configuration,Livit/Livit.Learn.EdX.configuration,rue89-tech/configuration,Softmotions/configuration,Carlos2005/configuration,alu042/configuration,joshhu/configuration,xiangjf/configuration,vasyarv/configuration,jorgeomarmh/configuration,vasyarv/configuration,knehez/configuration,openfun/configuration,arbrandes/edx-configuration,armaan/edx-configuration,rue89-tech/configuration,EDUlib/configuration,CredoReference/configuration,IndonesiaX/configuration,Softmotions/configuration,fghaas/edx-configuration,arbrandes/edx-configuration,appsembler/configuration,4eek/configuration,openfun/configuration,glengal/configuration,Pieros/configuration,jp-bpl/configuration,Pieros/configuration,negritobomb/edxplat,antoviaque/configuration,nikolas/configuration,edx/configuration,lgfa29/configuration,michaelsteiner19/open-edx-configuration,michaelsteiner19/open-edx-configuration,glengal/configuration,lgfa29/configuration,omarkhan/configuration,usernamenumber/configuration,hastexo/edx-configuration,knehez/configuration,eduStack/configuration,kencung/configuration,antoviaque/configuration,arifsetiawan/configuration,AlfiyaZi/configuration,vasyarv/configuration,stvstnfrd/configuration,arifsetiawan/configuration,omarkhan/configuration,xiangjf/configuration,gsehub/configuration,usernamenumber/configuration,cyanna/configuration,gashac03/ubuntu,jp-bpl/configuration,usernamenumber/configuration,glengal/configuration,UXE/edx-configuration,4eek/configuration,antshin72/configuration,zhengjunwei/configuration,jp-bpl/configuration,cyanna/configuration,edx/configuration,nikolas/configuration,michaelsteiner19/open-edx-configuration,louyihua/configuration,pobrejuanito/configuration,zhengjunwei/configuration,rue89-tech/configuration,hks-epod/configuration,Livit/Livit.Learn.EdX.configuration,marcore/configuration,louyihua/configuration,gsehub/configuration,mitodl/configuration,nunpa/configuration,hks-epod/configuration,marcore/configuration,beacloudgenius/configuration,michaelsteiner19/open-edx-configuration,chudaol/configuration,EDUlib/configuration,EDUlib/configuration,stvstnfrd/configuration,IONISx/edx-configuration,Pieros/configuration,antoviaque/configuration,chudaol/configuration,hastexo/edx-configuration-old,kencung/configuration,jorgeomarmh/configuration,arifsetiawan/configuration,lgfa29/configuration,antshin72/configuration,bugcy013/edx_infra,kursitet/configuration,antoviaque/configuration,yrchen/configuration,leansoft/configuration,chudaol/configuration,Carlos2005/configuration,xiangjf/configuration,open-craft/configuration,CredoReference/configuration,4eek/configuration,bugcy013/edx_infra,alu042/configuration,appsembler/configuration,vasyarv/configuration,negritobomb/edxplat,proversity-org/configuration,hastexo/edx-configuration-old,hks-epod/configuration,fghaas/edx-configuration,kursitet/configuration,hks-epod/configuration,nikolas/configuration,mitodl/configuration,UXE/edx-configuration,hks-epod/configuration,jp-bpl/configuration,kencung/configuration,negritobomb/edxplat,kencung/configuration,gsehub/configuration,omarkhan/configuration,gsehub/configuration,antshin72/configuration,IONISx/edx-configuration,nunpa/configuration,proversity-org/configuration,CredoReference/configuration,Pieros/configuration,openfun/configuration,nttks/configuration,nttks/configuration,gashac03/ubuntu,Livit/Livit.Learn.EdX.configuration,knehez/configuration,kursitet/configuration,mitodl/configuration,joshhu/configuration,IONISx/edx-configuration,IndonesiaX/configuration,eduStack/configuration,yrchen/configuration,IONISx/edx-configuration,edx/configuration,arifsetiawan/configuration,EDUlib/configuration,leansoft/configuration,leansoft/configuration,hastexo/edx-configuration,Softmotions/configuration,fghaas/edx-configuration,hastexo/edx-configuration,marcore/configuration,zhengjunwei/configuration,joshhu/configuration,marcore/configuration,Stanford-Online/configuration,Softmotions/configuration,alu042/configuration,hastexo/edx-configuration-old,jorgeomarmh/configuration,eduStack/configuration,armaan/edx-configuration,nunpa/configuration,gashac03/ubuntu,alu042/configuration,yrchen/configuration,AlfiyaZi/configuration,bugcy013/edx_infra,Carlos2005/configuration,EDUlib/configuration,hastexo/edx-configuration,open-craft/configuration,hastexo/edx-configuration,4eek/configuration,appsembler/configuration,cyanna/configuration,xiangjf/configuration,pedrorib/istx,Stanford-Online/configuration,openfun/configuration,proversity-org/configuration,UXE/edx-configuration,pobrejuanito/configuration,pedrorib/istx,cecep-edu/configuration,proversity-org/configuration,fghaas/edx-configuration,gsehub/configuration,IndonesiaX/configuration,edx/configuration,pobrejuanito/configuration,negritobomb/edxplat,leansoft/configuration,proversity-org/configuration,joshhu/configuration,UXE/edx-configuration,beacloudgenius/configuration,AlfiyaZi/configuration,nttks/configuration,pedrorib/istx,kursitet/configuration,Stanford-Online/configuration,lgfa29/configuration,open-craft/co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