Organizing all Omni specific scripts at one place

Currently we have different scripts to create images or flavors.
Moving all scripts at one place, in future we need to find better way
to manage and package them.

Change-Id: I23ed6218175c9c851547142c8d81eb7a1a32e925

run_tests.sh

@@ -40,7 +40,6 @@ copy_cinder_files() {
 
 copy_glance_files() {
     cp -R $WORKSPACE/glance/glance_store/tests/unit/ $DIRECTORY/$GLANCE/glance_store/tests
-    cp $WORKSPACE/glance/gce/gceutils.py $DIRECTORY/$GLANCE/glance_store/_drivers/
     cp -R $WORKSPACE/glance/glance_store/_drivers/ $DIRECTORY/$GLANCE/glance_store/
 }