Add support for a SLES based load balancer

On SUSE platforms we want to install a customly
tweaked loadbalancer template that launches a SLES
VM.
Merge pull request #81 from dirkmueller/master

Add support for a SLES based load balancer
Fix indenting to 2 spaces level

It seems most barclamps default to two spaces indentation,
this file was a mix of 2 space and 4 space. switch everything
to two spaces indendation.
Configure Heat stack domain

Heat requires for further services a keystone v3 domain to be
configured.
Merge pull request #83 from dirkmueller/setup_heat_domain

Configure Heat stack domain