setup password for internal database config

- both internal and external prompt for user credentials
- move database config into common area
- don’t show (none for non default) if no default password
- use md5 for all network connections (no ident installed)
- allow cli to pass in username/password
- configure CentOS appliance with default password

https://bugzilla.redhat.com/show_bug.cgi?id=1128291
load vcr in test mode
use newer webmock, since were no longer locked on excon
remove mixing enumerable into string

remove ord (standard in string)
Merge pull request #380 from kbrock/remove_string_enumerable

remove mixing enumerable into string
Merge pull request #372 from kbrock/postgresql_auth

setup password for internal database config
Merge pull request #313 from kbrock/gem_webmock

use newer webmock, since were no longer locked on excon
Merge pull request #378 from kbrock/fix_rspec_cli

load vcr in test mode
Add MeteringDeletate to Openstack Handle

Adds the ability to connect to Ceilometer through the openstack delegate.

https://bugzilla.redhat.com/show_bug.cgi?id=1129462
Allow non-wrapped openstack services

As Openstack evolves, there are likely to be new services we need to support.
This change will allow us to return the underlying Fog-based Openstack service
if we haven't yet wrapped Openstack service with a corresponding
tenant-supported Openstack Service Delegate class.

I'm a little torn on this commit, because the presence of a new Openstack
service should give us pause and require that we think about whether the service
needs to be restricted to tenant-based operations.

However, I also know how much the Openstack ecosystem changes and evolves.  So,
it makes sense to be able to simply pass through to the underlying service until
we absolutely need to wrap the service with tenant-based operations.

Associated with:
https://bugzilla.redhat.com/show_bug.cgi?id=1129462
Exclude Ceilometer from service fallback list

Be explicit in the fact that there is no service fallback for the Openstack
Ceilometer service.
Merge pull request #385 from blomquisg/bz1129462-openstack-handle-metering

Bz1129462 openstack handle metering