changing reddwarf to openstack-trove channel

fixes bug 1190029
Change-Id: I12fe21f20d6bfd08481518f849d41848a11cb542
Reviewed-on: https://review.openstack.org/32629
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Reviewed-by: James E. Blair <corvus@inaugust.com>
Reviewed-by: Elizabeth Krumbach Joseph <lyz@princessleia.com>
Approved: Jeremy Stanley <fungi@yuggoth.org>
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Tested-by: Jenkins