fix some issues with fedora 23 and dnf

roles/docker/tasks/main.yml

@@ -33,7 +33,6 @@
   action: "{{ docker_repo_info.pkg_repo }}"
   args:
     repo: "{{item}}"
-    update_cache: yes
     state: present
   with_items: docker_repo_info.repos
   when: docker_repo_info.repos|length > 0
@@ -42,7 +41,6 @@
   action: "{{ docker_package_info.pkg_mgr }}"
   args:
     pkg: "{{item}}"
-    update_cache: yes
     state: latest
   with_items: docker_package_info.pkgs
   when: docker_package_info.pkgs|length > 0

roles/docker/vars/fedora.yml

@@ -3,7 +3,7 @@ docker_kernel_min_version: '0'
 docker_package_info:
   pkg_mgr: dnf
   pkgs:
-    - docker-io
+    - docker
 
 docker_repo_key_info:
   pkg_key: ''