standardize on unix file endings (#516)

The majority of our source files have `\n` line endings.  This updates the few files that use `\r\n` to use `\n`.

src/api-service/__app__/negotiate/__init__.py

@@ -1,21 +1,21 @@
-#!/usr/bin/env python
-#
-# Copyright (c) Microsoft Corporation.
-# Licensed under the MIT License.
-
-import azure.functions as func
-
-# This endpoint handles the signalr negotation
-# As we do not differentiate from clients at this time, we pass the Functions runtime
-# provided connection straight to the client
-#
-# For more info:
-# https://docs.microsoft.com/en-us/azure/azure-signalr/signalr-concept-internals
-
-
-def main(req: func.HttpRequest, connectionInfoJson: str) -> func.HttpResponse:
-    return func.HttpResponse(
-        connectionInfoJson,
-        status_code=200,
-        headers={"Content-type": "application/json"},
-    )
+#!/usr/bin/env python
+#
+# Copyright (c) Microsoft Corporation.
+# Licensed under the MIT License.
+
+import azure.functions as func
+
+# This endpoint handles the signalr negotation
+# As we do not differentiate from clients at this time, we pass the Functions runtime
+# provided connection straight to the client
+#
+# For more info:
+# https://docs.microsoft.com/en-us/azure/azure-signalr/signalr-concept-internals
+
+
+def main(req: func.HttpRequest, connectionInfoJson: str) -> func.HttpResponse:
+    return func.HttpResponse(
+        connectionInfoJson,
+        status_code=200,
+        headers={"Content-type": "application/json"},
+    )