HA - remove node_type from cobbler definitions in example.pp

remove node_type definitions from example
HA set cisco-preseed to default

set default preseed to cisco-preseed
HA- fix missing braces in site.example.pp

fix missing braces
HA- remove node_type

remove node_type from cobbler-node
Merge pull request #137 from cbaesema/g-ha-wip

HA - remove node_type from cobbler definitions in example.pp