Restructure role

Change default variables to include lookup table.
Change tasks to set variables based on distribution version.

defaults/main.yml

@@ -1,9 +1,9 @@
----
+network_provider: "{{ network_providers[ansible_os_family][ansible_distribution_major_version] }}"
 
-# The default network_provider is detected based on
-# network_provider_default[ansible_distribution][ansible_distribution_major_version]
-#
-# If unspecified, the last default is 'nm'
-network_provider_default:
+network:
+  connections: []
+
+network_providers:
   RedHat:
-      "6": "initscripts"
+    "6": "initscripts"
+    "7": "nm"

tasks/main.yml

@@ -1,30 +1,20 @@
-- name: Detect network provider
-  set_fact:
-      network_provider: "{{ network.provider | default(network_provider_default[ansible_distribution][ansible_distribution_major_version] | default('nm')) }}"
-  when: network_provider is not defined
+- name: Set version specific variables
+  include_vars: "{{ ansible_os_family }}-{{ ansible_distribution_major_version }}.yml"
+
+- name: Install packages
+  yum:
+    name: "{{ network_packages | default([]) }}"
+    state: present
 
 - name: Enable network service
   service:
-    name: network
+    name: "{{ network_service_name }}"
+    state: started
     enabled: yes
-  when: network_provider == 'initscripts'
-
-- name: Install NetworkManager package
-  package:
-    name: NetworkManager
-    state: present
-  when: network_provider == 'nm'
-
-- name: Enable NetworkManager service
-  service:
-    name: NetworkManager
-    state: running
-    enabled: yes
-  when: network_provider == 'nm'
 
 - name: Configure networking connection profiles
   network_connections:
-      provider:       "{{ network_provider    | mandatory }}"
+      provider:       "{{ network.provider    | default(network_provider) | mandatory }}"
       name:           "{{ item.name           | mandatory }}"
       state:          "{{ item.state          | default(omit) }}"
       wait:           "{{ item.wait           | default(omit) }}"
@@ -39,6 +29,5 @@
       ip:             "{{ item.ip             | default(omit) }}"
   with_items: "{{ network.connections | default([]) }}"
 
-
 - name: Re-test connectivity
   ping:

vars/RedHat-6.yml

@@ -0,0 +1 @@
+network_service_name: network

vars/RedHat-7.yml

@@ -0,0 +1,3 @@
+network_service_name: NetworkManager
+network_packages:
+  - NetworkManager