Remove license from json dgs

Removing the license comment from all of the JSON DGs from the dg-loader.
Also, changing the JSON DGs service-logic element to point to ONAP
instead of OPENECOMP path (as compared from the original JSON DGs hosted
in appc-directed-graph/appc-dgraph/provider/src/main/resources/json path.

Change-Id: I35f3f6f509b15e1854682d49461fa9d3960d3af8
Signed-off-by: Hector Anapan <ha076r@att.com>
Issue-Id: [APPC-293]
Signed-off-by: Hector Anapan <ha076r@att.com>