Fix Beaker CI according recent puppetlabs-rabbitmq change.
Fix Beaker CI according recent puppetlabs-rabbitmq change.

The puppetlabs-rabbitmq module introduce a new feature related to the
erlang_cookie parameter change (the database must be wiped if the cookie is
changed), the parameter wipe_db_on_cookie_change is configured to false by
default.

But we're not setting up a rabbitmq cluster and we're not using pacemaker in
beaker CI tests, so we just remove the erlang cookie parameter change.

Change-Id: I8a994a5e4bce61a5700fe645db87889df8cd50b8
Closes-Bug: #1468444

toby82/puppet-ironic,openstack/puppet-ironic,toby82/puppet-ironic,fuel-infra/puppet-ironic,openstack/puppet-ironic,openstack/puppet-ironic,trown/puppet-ironic,fuel-infra/puppet-ironic,trown/puppet-ironic,fuel-infra/puppet-ironic,rdo-puppet-modules/puppet-ironic,trown/puppet-ironic,rdo-puppet-modules/puppet-ironic