Allow services to use same port with different protocols

kompose fails if compose file declares different protocols for the same port. eg;

...
     ports:
      - 666:666/udp
      - 666:666/tcp
...

This PR adds the port to the output and also makes sure that names are unique for each port/protocol pair.
This is supported with LoadBalancer (kubernetes/kubernetes#2995) so trying to use this config with LB panics.

script/test/fixtures/same-port-different-proto/docker-compose.yml

@@ -0,0 +1,21 @@
+version: "2"
+
+services:
+    web:
+      image: tuna/docker-counter23
+      ports:
+        - "5000:5000/tcp"
+      links:
+        - redis
+      networks:
+        - default
+
+    redis:
+      image: redis:3.0
+      networks:
+        - default
+      ports:
+        - "6379/tcp"
+        - "6379/udp"
+        - "1234:1235/udp"
+