Fix bug 1804 - adding swap disks

Change-Id: I447a1da59d1efdd9209950a185b819e32c696012
Signed-off-by: sousaedu <eduardo.sousa@canonical.com>
diff --git a/NG-RO/osm_ng_ro/ns.py b/NG-RO/osm_ng_ro/ns.py
index d42433b..f943c2a 100644
--- a/NG-RO/osm_ng_ro/ns.py
+++ b/NG-RO/osm_ng_ro/ns.py
@@ -563,6 +563,11 @@
                         flavor_data["ephemeral"] = int(
                             storage.get("size-of-storage", 0)
                         )
+                    elif (
+                        storage.get("type-of-storage")
+                        == "etsi-nfv-descriptors:swap-storage"
+                    ):
+                        flavor_data["swap"] = int(storage.get("size-of-storage", 0))
 
                 if target_flavor.get("guest-epa"):
                     extended = {}