Removed db recipes

The db recipes have been removed.  It is up to the operator to
setup the database, users, and grants before deploying openstack.
These have been moved to the `openstack-db` recipe in the
`openstack-ops-database` wrapper cookbook.

Change-Id: I19e71d22091b919f6dcffeb22a8e095d100f08fd
Removed the use of non-standard ohai plugin

We now have a helper method `#address_for` to return the
IP of a given interface. Switched out the ohai use
in favor of `#address_for`. Also, updated berkshelf
to 2.x which handles dep resolution correctly. I run
into problems getting berkshelf to lock to the new 0.3.0
openstack-common w/o updating berkshelf.

Change-Id: Iaf39cee98589d8d1c4b90e610b94e5440ac51fd8
Merge "Removed db recipes"
Merge "Removed the use of non-standard ohai plugin"
fix nova-network vs. openstack-network conflict

Having both nova-network and openstack-network::server in the run_list
caused conflicts when installing packages.

Change-Id: I105eab62d49c1e6d36e2416ae44c73f551d062e5
Compute using new `["openstack"]["mq"]` attributes

Added grizzly rabbbit HA functionality, and switched to the
new mq attributes.  Attributes were updated to allow global
and local overrides.

Change-Id: I95451012297f1f8f4afdb71f10e703765061dfa4
Merge "fix nova-network vs. openstack-network conflict"
Merge "Compute using new `["openstack"]["mq"]` attributes"