Add parameter for default_floating_pool

In order to assign a floating IP via the API without specifying a pool,
this value must be set in nova.conf where the nova-api is running.
Merge pull request #133 from bcrochet/floating-pool

Add parameter for default_floating_pool
Make the provisioning setup easier to configure, by
allowing the user to specify PROVISIONING_INTERFACE
variable at runtime. Also handle interface names
like br-ex or eth0.1234 that facter mangles.

In lieu of changing foreman-installer code, provide facterized if name to installer.pp
Merge pull request #116 from huit/features/provisioning-interface

Provisioning setup easier to configure via explicitly define provisioning interface
Merge pull request #135 from jguiditta/ha_loadbalancer

WIP Ha loadbalancer
BZ #1049079 - Use openstack-puppet-modules package.

https://bugzilla.redhat.com/show_bug.cgi?id=1049079