Changes in database for allowing IP parameters, changes in DB migration...

Changes in database for allowing IP parameters, changes in DB migration script, new DB version 12, small changes in openmano_schemas and other files to deal with new DB version, basictest run successfully

Change-Id: I30e00c5bcd30aab35a39746dbf568dac4164f247
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>