Use sudo for role testing

There are 2 ways to realize the privilege escalation
needed for the gate jobs.

1) Editing the playbooks (and hope to not forget to
write the sudo/become lines for every role)
2) Editing the inventory and set the variable there.

I'm taking the second approach with the minimum set
of variables (become_method is sudo by default and
become_user is root by default).

Change-Id: Iac16f49b514f41684b319e3d091b52513f721b55
Signed-off-by: Kevin Carter <kevin.carter@rackspace.com>

tests/ansible.cfg

@@ -1,3 +1,3 @@
 [defaults]
 roles_path = ../../
-
+remote_tmp = ../.ansible/tmp/

tests/inventory

@@ -1,3 +1,2 @@
 [all]
-localhost ansible_connection=local physical_host=localhost
-
+localhost ansible_connection=local physical_host=localhost ansible_become=True

tests/test.yml

@@ -16,6 +16,18 @@
 - name: Playbook for pre-role testing
   hosts: localhost
   connection: local
+  pre_tasks:
+    - name: Ensure root ssh key
+      user:
+        name: "{{ ansible_env.USER | default('root') }}"
+        generate_ssh_key: "yes"
+        ssh_key_bits: 2048
+        ssh_key_file: ".ssh/id_rsa"
+    - name: get the calling users key
+      command: cat ~/.ssh/id_rsa.pub
+      register: key_get
+    - set_fact:
+        lxc_container_ssh_key: key_get.stdout
   roles:
     - role: "lxc_hosts"
       lxc_net_address: 10.100.100.1
@@ -51,6 +63,7 @@
         hostname: "{{ item.name }}"
         inventory_hostname: "{{ item.name }}"
         ansible_ssh_host: "{{ item.address }}"
+        ansible_become: true
         properties:
           service_name: "{{ item.service }}"
         container_networks:
@@ -82,7 +95,9 @@
       register: lxc_containers
     - name: Format output
       set_fact:
-        lxc_output: "{{ lxc_containers.stdout | replace('  ', ' ') | lower }}"
+        _lxc_output: "{{ lxc_containers.stdout.split() | lower }}"
+    - set_fact:
+        lxc_output: "{{ _lxc_output | join(' ') }}"
     - name: Check role functions
       assert:
         that: