starting a single havana build for development purposes.
Merge pull request #51 from robparrott/master

starting a single havana build for development purposes.
provide a listing of CentOS images
Merge branch 'master' of github.com:huit/nepho
Merge branch 'master' of github.com:huit/nepho
refactor user data script snippets into separate files, to simplify management of these scripts.
Merge pull request #56 from robparrott/userdata-script-refactoring

Userdata script refactoring
allow CF template ref strings for the public_hostname variable.
add in a instance tag for its name, so it appears in the web console. Also remove some package defaults.
checking of bees-specific changes
get updated bees tempalte that doesn't wair for an ELB.
put pattern file in the wrong palce for bees
dont try to tag the launch config object
bug fix: get the reosurce name correct for Autoscale group launch config.
Merge branch 'master' of github.com:huit/nepho into bees
fix bug where public_hostname was not honored, and add Name tags to Bastion and NAT
Merge pull request #58 from huit/bugfix

fix bug where public_hostname was not honored, and add Name tags to Bast...
Merge branch 'master' of github.com:huit/nepho into bees
Merge pull request #59 from huit/bees

Bees working config
Merge branch 'master' of github.com:huit/nepho into feature/openstack-havana