day1-2: rename connection-point-ref to external-connection-point-ref

Change-Id: I339cc930bf19c012333ba4348656df6d6fcc3fbd
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/models/augments/common-augments.yang b/models/augments/common-augments.yang
index a3236c4..912199c 100644
--- a/models/augments/common-augments.yang
+++ b/models/augments/common-augments.yang
@@ -274,7 +274,7 @@
                           ";
                         type string;
                     }
-                    leaf connection-point-ref {
+                    leaf external-connection-point-ref {
                         description
                           "String representing a leaf reference to the particular external connection point
                            This field should match /vnfd:vnfd-catalog/vnfd:vnfd/vnfd:id/vnfd:connection-point/vnfd:name