Fix missing tests from #1389

[jamietanna]

Removed from https://github.com/deepmap/oapi-codegen/pull/1389 for time, was:

+++ internal/test/issues/issue-1378/bionicle.yaml
@@ -0,0 +1,45 @@
+openapi: 3.0.1
+
+info:
+  title: Test
+  description: Test
+  version: 1.0.0
+
+paths:
+  /bionicle/{name}:
+    get:
+      parameters:
+        # TODO
+        # - $ref: "common.yaml#/components/parameters/tracingId"
+        - $ref: "#/components/parameters/bionicleName"


+++ internal/test/issues/issue-1378/common.yaml
@@ -0,0 +1,25 @@
+openapi: 3.0.1
+
+info:
+  title: Test
+  description: Test
+  version: 1.0.0
+
+components:
+  schemas:
+    ErrTracingIdNotSent:
+      type: object
+      properties:
+        code:
+          type: string
+      required:
+        - code
+  # TODO
+  # parameters:
+  #   tracingId:
+  #     name: Tracing-Id
+  #     in: header
+  #     required: true
+  #     schema:
+  #       type: string
+  #       format: uuid

We should make sure this actually works, as it appears to be introducing multiple package imports.