Fix role gate tests for Ansible 2.3

'ansible_become' defined as a host_var or in the inventory for a host
has a higher precedence than 'become' defined within a playbook.

In change Id5b76a87809f03951c954fc3d752419a673403f7, 'become' was
defined explicitly for each play running against localhost so
'ansible_become' should be removed from its host_vars.

Duplicate 'ansible_host' definitions have also been removed.

Change-Id: I069d2113832cf0fe49695c5424f56ed5dad8fee6
Depends-On: Iefe86bbebac49efb6a3a98b5e070ff11e7fb07b2

tests/host_vars/infra1.yml

@@ -13,7 +13,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-ansible_host: 10.1.1.101
 ansible_host: 10.1.1.101
 ansible_become: True
 ansible_user: root

tests/host_vars/localhost.yml

@@ -13,10 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-ansible_become: True
 ansible_connection: local
 ansible_host: 10.1.1.1
-ansible_host: 10.1.1.1
 neutron_local_ip:  10.1.2.1
 ansible_python_interpreter: "/usr/bin/python2"
 bridges:

tests/host_vars/openstack1.yml

@@ -13,7 +13,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-ansible_host: 10.1.1.102
 ansible_host: 10.1.1.102
 ansible_become: True
 ansible_user: root

tests/test-install-haproxy.yml

@@ -15,6 +15,7 @@
 
 - name: Install haproxy
   hosts: localhost
+  become: true
   roles:
     - role: "haproxy_server"
       haproxy_service_configs: "{{ haproxy_default_services }}"