Improve the validation of 'nets' parameter

This PS will improve the validation for the
'nets' parameter.

Change-Id: I3007c412d06ebe9f3494dc07eef4f962ead4d151
Closes-Bug: #1748811
Depends-On: Iebb3ddb53e5e9d31175e6e7eeb170a66a8630a17

zun/api/validation/parameter_types.py

@@ -110,7 +110,31 @@ hints = {
 }
 
 nets = {
-    'type': ['array', 'null']
+    'type': ['array', 'null'],
+    'items': {
+        'type': 'object',
+        'properties': {
+            'network': {
+                'type': ['string'],
+                'minLength': 1,
+                'maxLength': 255,
+            },
+            'v4-fixed-ip': {
+                'type': ['string'],
+                'format': 'ipv4'
+            },
+            'v6-fixed-ip': {
+                'type': ['string'],
+                'format': 'ipv6'
+            },
+            'port': {
+                'type': ['string'],
+                'maxLength': 255,
+                'minLength': 1,
+            }
+        },
+        'additionalProperties': False
+    }
 }
 
 availability_zone = {