Remove required but not existing properties from NewShare? (#108)

* Remove required but not existing properties from NewShare

It seems these required properties don't exist? But it seems https://editor.swagger.io/ doesn't detect this as an error, am I seeing this wrong?

* Put shareType and resourceType back

Now the required list is in the same order as the properties list

spec.yaml

@@ -391,10 +391,9 @@ definitions:
       - providerId
       - owner
       - sender
-      - protocol
-      - permission
       - shareType
       - resourceType
+      - protocol
     properties:
       shareWith:
         type: string