Add option to install or not yum repo

defaults/main.yml

@@ -13,6 +13,8 @@ docker_yum_repo_url: "https://yum.dockerproject.org/repo/main"
 docker_yum_repo: "{{ docker_yum_repo_url }}/{{ docker_yum_repo_uris[ansible_distribution] }}"
 docker_yum_repo_gpg: 'https://yum.dockerproject.org/gpg'
 docker_yum_package: "docker-engine{{ '-' + docker_version if docker_version else '' }}"
+# Optionally install yum repo file
+docker_yum_install_repo: yes
 
 # Prior to 1.9, starting Docker engine as daemon use flag '-d' was used, now it's 'daemon' argument
 docker_daemon_opts: "{{ 'daemon' if docker_version == '' or docker_version | version_compare('1.9', '>=') else '-d' }}{{ ' -H fd://' if ansible_os_family == 'RedHat' else ''}}"

tasks/RedHat.yml

@@ -1,6 +1,7 @@
 
 - name: Install Docker Repository
   template: src=docker-repo.j2 dest=/etc/yum.repos.d/docker.repo
+  when: docker_yum_install_repo
 
 - name: (yum) Install SELinux python bindings
   yum: name=libselinux-python state=present