Split out elasticsearch module

The spec:
http://specs.openstack.org/openstack-infra/infra-specs/specs/puppet-modules.html

Depends-On: Ide11b4f4927fcdb4b19b2e06811f2f32c20d83f3
Change-Id: Id38232f6f9d928c893013c5f7eb70956955bf777
Merge "Split out elasticsearch module"