VOL-1867 move simulated olt from voltha-go to voltha-simolt-adapter

Sourced from voltha-go commit 251a11c0ffe60512318a644cd6ce0dc4e12f4018

Change-Id: I8e7ee4da1fed739b3c461917301d2729a79307f5
diff --git a/vendor/github.com/opencord/voltha-protos/.gitignore b/vendor/github.com/opencord/voltha-protos/.gitignore
new file mode 100644
index 0000000..5d6f023
--- /dev/null
+++ b/vendor/github.com/opencord/voltha-protos/.gitignore
@@ -0,0 +1,21 @@
+# python related
+*.pyc
+*.egg-info
+dist
+build
+.tox
+venv_protos
+
+# go related
+go_temp
+
+# generated files that shouldn't be committed
+*_pb2.py
+*_pb2_grpc.py
+*.desc
+
+# tesing related
+.coverage
+*coverage.xml
+*results.xml
+