first pass at adding 'stable' and 'edge' version packages

- Only have ubuntu to test on
  - fedora and redhat are placeholders/guesses
  - the "old" package repositories seem to have the "new" CE version which is `1.13.1` based
- `docker-ce` looks like it is named as a backported `docker-engine` package in some
  places

- Did not change the `defaults` version anywhere, so should work as before
- Did not point to new package repositories, as existing ones have the new packages.

roles/docker/vars/debian.yml

@@ -6,6 +6,8 @@ docker_versioned_pkg:
   '1.11': docker-engine=1.11.2-0~{{ ansible_distribution_release|lower }}
   '1.12': docker-engine=1.12.6-0~debian-{{ ansible_distribution_release|lower }}
   '1.13': docker-engine=1.13.1-0~debian-{{ ansible_distribution_release|lower }}
+  'stable': docker-ce=17.03.0~ce-0~debian-{{ ansible_distribution_release|lower }}
+  'edge': docker-ce=17.03.0~ce-0~debian-{{ ansible_distribution_release|lower }}
 
 docker_package_info:
   pkg_mgr: apt

roles/docker/vars/fedora.yml

 docker_kernel_min_version: '0'
 
+# https://docs.docker.com/engine/installation/linux/fedora/#install-from-a-package
+# https://download.docker.com/linux/fedora/7/x86_64/stable/
+# the package names below are guesses;
+# docs mention `sudo dnf config-manager --enable docker-ce-edge` for edge
 docker_versioned_pkg:
   'latest': docker
   '1.11': docker-1:1.11.2
   '1.12': docker-1:1.12.5
+  'stable': docker-ce
+  'edge': docker-ce-edge
 
 docker_package_info:
   pkg_mgr: dnf

roles/docker/vars/redhat.yml

@@ -7,6 +7,13 @@ docker_versioned_pkg:
   '1.11': docker-engine-1.11.2-1.el7.centos
   '1.12': docker-engine-1.12.6-1.el7.centos
   '1.13': docker-engine-1.13.1-1.el7.centos
+  'stable': docker-engine-17.03.0.ce-1.el7.centos
+  'edge':  docker-engine-17.03.0.ce-1.el7.centos
+
+# https://docs.docker.com/engine/installation/linux/centos/#install-from-a-package
+# https://download.docker.com/linux/centos/7/x86_64/stable/Packages/ - guesses
+  # 'stable': docker-ce-17.03.0.el7.centos
+  # 'edge': docker-ce-17.03.0.el7.centos
 
 docker_package_info:
   pkg_mgr: yum

roles/docker/vars/ubuntu.yml

@@ -7,6 +7,8 @@ docker_versioned_pkg:
   '1.11': docker-engine=1.11.1-0~{{ ansible_distribution_release|lower }}
   '1.12': docker-engine=1.12.6-0~ubuntu-{{ ansible_distribution_release|lower }}
   '1.13': docker-engine=1.13.1-0~ubuntu-{{ ansible_distribution_release|lower }}
+  'stable': docker-ce=17.03.0~ce-0~ubuntu-{{ ansible_distribution_release|lower }}
+  'edge': docker-ce=17.03.0~ce-0~ubuntu-{{ ansible_distribution_release|lower }}
 
 docker_package_info:
   pkg_mgr: apt