Move glance-data container to the correct place

It should be in docker/{centos,fedora,...}/binary/glance/glance-data
and not directly at the root of docker directory.

Change-Id: I9c4c260ef14f9b367dc86ccfb1a66d764d58ae01
Closes-Bug: #1468596

docker/centos/binary/glance/glance-data/build

+../../../../../tools/build-docker-image
\ No newline at end of file

docker/glance/glance-data/build

-../../../tools/build-docker-image
\ No newline at end of file