Added support of PARAVIRT interface type following IM change 6688

Change-Id: If6d9d486c2a78b55e6c1218b6292896b0707ca78
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/osm_ro/openmano_schemas.py b/osm_ro/openmano_schemas.py
index 00a5b51..f717a4a 100644
--- a/osm_ro/openmano_schemas.py
+++ b/osm_ro/openmano_schemas.py
@@ -465,7 +465,7 @@
             "bandwidth":bandwidth_schema,
             "vpci":pci_schema,
             "mac_address": mac_schema,
-            "model": {"type":"string", "enum":["virtio","e1000","ne2k_pci","pcnet","rtl8139"]},
+            "model": {"type":"string", "enum":["virtio","e1000","ne2k_pci","pcnet","rtl8139", "paravirt"]},
             "port-security": {"type" : "boolean"},
             "floating-ip": {"type" : "boolean"}
         },
@@ -1220,4 +1220,4 @@
         "mac": mac_schema
     },
     "required": ["port"]
-}
\ No newline at end of file
+}