Introduce consistent NIC naming in a forked os_boot template
Make use of forked os_boot template for UDEV NIC renaming
Introduce stage1 for initial network configuration via puppet
puppet-secret requires to have certname as FQDN
Merge branch 'cloud_models' into eisbrecher

Conflicts:
	lib/project_razor/broker/puppet/agent_install.erb
	lib/project_razor/model/dtagcloud_ubuntu_compute.rb
	lib/project_razor/model/dtagcloud_ubuntu_storage.rb
Fix boolean mix-up with set_hostname and make_user options

fixes security-mirror, set_hostname and make_user preseed template settings.
Introduce time sync of hardware clock during stage1
Reviewed preseed for compute and storage nodes for redeployment once again

* avoid too large swap partitions, due to partman-auto
* disable not used source and backports repos
* disable multiarch, since we do not mirror anything else
* activate crashkernel= memory hole
* disable splash screen
Initial DTAG specific preseed for service VMs