Fix Basic13. vnf-profile-id was not correct

After merge of https://osm.etsi.org/gerrit/c/osm/LCM/+/12827


Basic13 started to failed.

A problem when adding the relations existed before the commit
but the exception was not properly raised.

After merge we could explicitly see the problem.
Signed-off-by: Patricia Reinoso <patricia.reinoso@canonical.com>

charm-packages/ns_relations_ns/ns_relations_nsd.yaml

@@ -31,7 +31,7 @@ nsd:
       relation:
       - name: relation
         entities:
-        - id: 1
+        - id: vnf1
           endpoint: interface
-        - id: 2
+        - id: vnf2
           endpoint: interface