fix 1238: Provide known ip-address, mac-address at created vnf

vnf is created at database. Instantiation parameters of
ip-address, mac-adddress are populated to the vnf, so that
it is available for jinja2 cloud-init parsing at LCM

Change-Id: Ida091f713219f702b753a044683d9474a2670cc1
Signed-off-by: tierno <alfonso.tiernosepulveda@telefonica.com>