SOL005: Fix in NS Lifecycle mgmt data types

src/SOL005/NSLifecycleManagement/NSLifecycleManagement.yaml

 swagger: "2.0"
-
 info:
   version: "1.1.0"
   title: "SOL005 - NS Lifecycle Management Interface"

src/SOL005/NSLifecycleManagement/definitions/NSLifecycleManagement_def.yaml

@@ -22,11 +22,10 @@ definitions:
         items:
           $ref: "#/definitions/HealVnfData"
 
-
   CancelMode:
     description: >
       This type represents a parameter to select the mode of canceling an ongoing NS LCM operation occurrence. 
-      It shall comply with the provisions defined in Table 6.5.2.16-1..
+      It shall comply with the provisions defined in Table 6.5.2.16-1.
     type: object
     required:
       - cancelMode
@@ -36,6 +35,15 @@ definitions:
           Cancellation mode to apply.
         $ref: "#/definitions/CancelModeType"
 
+  CancelModeType:
+    description: >
+      The enumeration CancelModeType defines the valid modes of cancelling a NS LCM operation occurrence.
+      It shall comply with the provisions defined in Table 6.5.4.10-1.
+    type: string
+    enum:
+      - GRACEFUL
+      - FORCEFUL
+
   HealNsData:
     description: >
       This type represents the information used to heal a NS.