[openstack|metering] Added metering service for Ceilometer
[openstack|metering] Allow multiple filtering queries
Merge pull request #1 from alvingarcia/metering

[openstack|metering] Allow multiple filtering queries
Used publicURL as default endpoint type for OpenStack network
Support filters in images collection
Fix test
Pass on filters to volume endpoint, mainly to allow admin to get volumes from all tenants.
[openstack|metering] Fix get_statistics mock
Merge pull request #2 from alvingarcia/openstack-metering

[openstack|metering] Fix get_statistics mock
Rename 'each' method to 'each_page'
Adds backwards compatibility comment
Authentication + get_organizations working, need to be cleaned up
get_organization implemented
refactor get_organizations, not overriding the path, require parses in the request class
get_catalog implemented
get_catalog_item implemented
get_vapp_template implemented
clean-up
get_vdc implemented
fix defaults