enforcing single proposal for all openstack barclamps [8/9]

setup allow_multiple_proposals to false for cinder, database, glance, keystone, nova, nova_dashboard, quantum rabbitmq, and swift.


 .../app/models/nova_dashboard_service.rb           |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Crowbar-Pull-ID: 79c57cd7d40ba8de015310df1f8f9e8b30a9b020

Crowbar-Release: pebbles