Pin ARA to <1.0.0

ARA 1.0 will be released in the near future and isn't backwards
compatible. Pin it so it doesn't break things unexpectedly.

Change-Id: If40616a433c32ce23eca3b06c27050950c62e250

devstack-vm-gate-wrap.sh

@@ -490,7 +490,7 @@ virtualenv /tmp/ansible
 # easy_install. Hope is this is generally more reliable.
 /tmp/ansible/bin/pip install pbr
 /tmp/ansible/bin/pip install ansible==$ANSIBLE_VERSION \
-                     devstack-tools==$DSTOOLS_VERSION ara 'cmd2<0.9.0'
+                     devstack-tools==$DSTOOLS_VERSION 'ara<1.0.0' 'cmd2<0.9.0'
 export ANSIBLE=/tmp/ansible/bin/ansible
 export ANSIBLE_PLAYBOOK=/tmp/ansible/bin/ansible-playbook
 export ANSIBLE_CONFIG="$WORKSPACE/ansible.cfg"