Replace godep with dep

vendor/github.com/go-openapi/spec/fixtures/local_expansion/spec.json

@@ -0,0 +1,46 @@
+{
+  "basePath": "/v1",
+  "consumes": [
+    "application/json"
+  ],
+  "host": "item.api.local",
+  "info": {
+    "description": "Item API",
+    "title": "Item API",
+    "version": "1.0.0"
+  },
+  "paths": {
+    "/item": {
+      "get": {
+        "operationId": "GetItem",
+        "responses": {
+          "200": {
+            "description": "item detail response",
+            "schema": {
+              "$ref": "item.json"
+            }
+          }
+        }
+      }
+    }
+  },
+  "produces": [
+    "application/json"
+  ],
+  "schemes": [
+    "http"
+  ],
+  "security": [
+    {
+      "key": []
+    }
+  ],
+  "securityDefinitions": {
+    "key": {
+      "in": "header",
+      "name": "x-item-token",
+      "type": "apiKey"
+    }
+  },
+  "swagger": "2.0"
+}