turn adduser/download roles into meta roles

This should make things a little more composable,
by making these roles meta roles that perform no
actions by default we allow each role to own its own
resources.

roles/adduser/defaults/main.yml

@@ -0,0 +1,24 @@
+---
+addusers:
+  etcd:
+    name: etcd
+    comment: "Etcd user"
+    createhome: yes
+    home: "/var/lib/etcd"
+    system: yes
+    shell: /bin/nologin
+  kube:
+    name: kube
+    comment: "Kubernetes user"
+    shell: /sbin/nologin
+    system: yes
+    group: "{{ kube_cert_group }}"
+    createhome: no
+
+adduser:
+  name: "{{ user.name }}"
+  group: "{{ user.name|default(None) }}"
+  comment: "{{ user.comment|default(None) }}"
+  shell: "{{ user.shell|default(None) }}"
+  system: "{{ user.system|default(None) }}"
+  createhome: "{{ user.createhome|default(None) }}"

roles/adduser/tasks/main.yml

@@ -1,28 +1,13 @@
 ---
-- name: gather os specific variables
-  include_vars: "{{ item }}"
-  with_first_found:
-    - files:
-      - "{{ ansible_distribution|lower }}-{{ ansible_distribution_version|lower|replace('/', '_') }}.yml"
-      - "{{ ansible_distribution|lower }}-{{ ansible_distribution_release }}.yml"
-      - "{{ ansible_distribution|lower }}-{{ ansible_distribution_major_version|lower|replace('/', '_') }}.yml"
-      - "{{ ansible_distribution|lower }}.yml"
-      - "{{ ansible_os_family|lower }}.yml"
-      - defaults.yml
-      paths:
-      - ../vars
-      skip: true
-
 - name: User | Create User Group
-  group: name={{item.group|default(item.name)}} system={{item.system|default(omit)}}
-  with_items: "{{ addusers }}"
+  group: name={{user.group|default(user.name)}} system={{user.system|default(omit)}}
 
 - name: User | Create User
   user:
-    comment: "{{item.comment|default(omit)}}"
-    createhome: "{{item.create_home|default(omit)}}"
-    group: "{{item.group|default(item.name)}}"
-    home: "{{item.home|default(omit)}}"
-    name: "{{item.name}}"
-    system: "{{item.system|default(omit)}}"
-  with_items: "{{ addusers }}"
+    comment: "{{user.comment|default(omit)}}"
+    createhome: "{{user.create_home|default(omit)}}"
+    group: "{{user.group|default(user.name)}}"
+    home: "{{user.home|default(omit)}}"
+    shell: "{{user.shell|default(omit)}}"
+    name: "{{user.name}}"
+    system: "{{user.system|default(omit)}}"