Replace godep with dep

vendor/github.com/googleapis/gnostic/generate-gnostic/test/errors/x-extension-name-collision.errors

@@ -0,0 +1,2 @@
+Schema SampleCompanyTwoPrimitiveString and SampleCompanyOnePrimitiveString have the same 'id' field value.
+

vendor/github.com/googleapis/gnostic/generate-gnostic/test/errors/x-unsupportedprimitives.errors

@@ -0,0 +1,2 @@
+Schema SampleCompanyOnePrimitiveString has type 'unsupportedtype' which is not supported. Supported primitive types are [boolean integer number string].
+

vendor/github.com/googleapis/gnostic/generate-gnostic/test/x-extension-name-collision.json

@@ -0,0 +1,12 @@
+        {
+            "definitions": {
+                "SampleCompanyOnePrimitiveString": {
+                    "type": "string",
+                    "id": "x-samplecompanyone-mystr"
+                },
+              "SampleCompanyTwoPrimitiveString": {
+                "type": "string",
+                "id": "x-samplecompanyone-mystr"
+              }
+            }
+        }

vendor/github.com/googleapis/gnostic/generate-gnostic/test/x-unsupportedprimitives.json

@@ -0,0 +1,8 @@
+        {
+            "definitions": {
+                "SampleCompanyOnePrimitiveString": {
+                    "type": "unsupportedtype",
+                    "id": "x-samplecompanyone-mystr"
+                }
+            }
+        }