update configure_hostname.pp to ensure that bind is installed and a
DNSSEC key is created prior to referencing in configure_origin.pp
Fixing DNSSEC key creation in configure_hostname.pp

Added requires on Package['bind']
Added unless to prevent clobbering the DNSSEC key created by install
from source options.
Merge pull request #53 from detiber/fixBuild

Merged by openshift-bot