Change the AMQP queue when using file backend

These changes make it possible to have glance image sync function
when using a backend store of "file".

When a backend store of "file" is used the glance notification topic
queue will be set to "glance_notifications"; this will override the
"default" attribute.

These change work in conjuction with the glance image sync script:
https://github.com/rcbops/glance-image-sync
updated image-sync script
updated notifications topic block

fixed a cp tech mistake.
add packages
removed image-sync py file
Merge pull request #191 from rackerjoe/fix-image-sync-commit

Merged automatically by jenkins after successful build test
added role check for single-controller
udpated role lookup
Merge pull request #193 from cloudnull/role-lookup

Merged automatically by jenkins after successful build test
added flavor attribute

Now the user has the ability to set the pipeline policy. This will
allow the user to consume multiple glance pipelines.
Merge pull request #195 from cloudnull/Issue807

Merged automatically by jenkins after successful build test