Fix incorrect response example of flavor creation

Added three missed attributions: "uuid", "created_at" and
"updated_at". And renamed it to keep similar naming convention.

Change-Id: I426b367c538922cc5825c65d9f4e943438d2cb28
Closes-Bug: #1677088

api-ref/source/mockup/flavor-create-request.json

@@ -0,0 +1,13 @@
+{
+  "name": "test",
+  "properties": {
+    "memory": {
+      "capacity_mib": "3000",
+      "type": "DDR2"
+    },
+    "processor": {
+      "total_cores": "10",
+      "model": "Intel"
+    }
+  }
+}

api-ref/source/mockup/flavor-create-response.json

@@ -0,0 +1,16 @@
+{
+  "created_at": "2017-03-29 01:50:06 UTC",
+  "name": "test",
+  "properties": {
+    "memory": {
+      "capacity_mib": "3000",
+      "type": "DDR2"
+    },
+    "processor": {
+      "total_cores": "10",
+      "model": "Intel"
+    }
+  },
+  "updated_at": "2017-03-29 01:50:06 UTC",
+  "uuid": "c5136808-8162-4595-9b19-6c92f5956766"
+}

api-ref/source/mockup/flavor-post-response.json

@@ -1,12 +0,0 @@
-{
-  "name": "test", 
-  "properties": {
-    "memory": {
-      "capacity_mib": "3000"
-    }, 
-    "processor": {
-      "total_cores": "10", 
-      "model": "Intel"
-    }
-  }
-}

api-ref/source/mockup/flavor-post.json

@@ -1,12 +0,0 @@
-{
-  "name": "test", 
-  "properties": {
-    "memory": {
-      "capacity_mib": "3000"
-    }, 
-    "processor": {
-      "total_cores": "10", 
-      "model": "Intel"
-    }
-  }
-}