Adding a datawarehouse manager:
prov = ManageIQ::Providers::Hawkular::DatawarehouseManager.new(
  :name                      => 'centos7-6',
  :zone                      => Zone.first,
  :connection_configurations => [{:endpoint       => {:role     => :default,
                                                    :hostname => 'mtayer-centos7-6.eng.lab.tlv.redhat.com',
                                                    :port     => "8080"},
                                :authentication => {:authtype => :default,
                                                    :password => "password",
                                                    :userid   => "jdoe"}}])
prov.save