CORD-1401 Don't overwrite existing keypair, CiaB PCU setup roles

Change-Id: Ia0fe60315ed09ba39634ed5c25e50e7bfd51d1ab
diff --git a/roles/maas-user-pubkey/tasks/main.yml b/roles/maas-user-pubkey/tasks/main.yml
new file mode 100644
index 0000000..5fb3492
--- /dev/null
+++ b/roles/maas-user-pubkey/tasks/main.yml
@@ -0,0 +1,14 @@
+---
+# roles/maas-user-pubkey/tasks/main.yml
+
+- name: Create maas user
+  user:
+    name: maas
+    groups: "{{ maas_groups }}"
+    state: present
+
+- name: Authorize generated key for maas user
+  authorized_key:
+    user: maas
+    key: "{{ lookup('file', pub_ssh_key_file_location+'/cord_rsa.pub') }}"
+    state: present