This option has been supported by puppet-oslo but has not been
configurable.
Conflicts:
manifests/init.pp
(yoga to xena)
Conflicts:
spec/classes/heat_init_spec.rb
Change-Id: If4ea3913c5ec9c3719d57b8b682a87816cbaabf7
(cherry picked from commit ee09225ba9)
(cherry picked from commit 23eb2c5071)
(cherry picked from commit de3d03502f)
(cherry picked from commit 9bf5e694bf)