I just tried to install the undercloud and it fails with the following:

Caching puppet-ceph from https://git.openstack.org/stackforge/puppet-ceph.git in /root/.cache/image-create/source-repositories/puppet_ceph_37a8b07e4ba60cba4257960ec9cd83b3213fe5f1
Cloning into '/root/.cache/image-create/source-repositories/puppet_ceph_37a8b07e4ba60cba4257960ec9cd83b3213fe5f1.tmp'...
fatal: repository 'https://git.openstack.org/stackforge/puppet-ceph.git/' not found

I have tried replicating from a command line, and it appears that the repository was moved to:

git clone https://git.openstack.org/openstack/puppet-ceph.git

-- 
Ignacio Bravo
LTG Federal Inc