Fix bug 1449: Preexisting flavor deleted

Change-Id: I98283117f99e8d9e3d795961654b603c644d9d48
Signed-off-by: lloretgalleg <illoret@indra.es>
diff --git a/RO/osm_ro/nfvo.py b/RO/osm_ro/nfvo.py
index a7b15a2..a617709 100644
--- a/RO/osm_ro/nfvo.py
+++ b/RO/osm_ro/nfvo.py
@@ -1801,7 +1801,9 @@
             #delelte at VIM
             c = mydb.get_rows(FROM='datacenters_flavors', WHERE={'flavor_id': flavor})
             for flavor_vim in c:
-                if not flavor_vim['created']:  # skip this flavor because not created by openmano
+                # skip this flavor because not created by openmano
+                # field created in the database is a string, must do a string comparison
+                if flavor_vim['created'] != "true":
                     continue
                 # look for vim
                 myvim = None