VOL-2059 move ponsim-olt adapter to its own repo

Based on voltha-go commit 4f48884d490a3e6627687604ffdf885792326521

Change-Id: Idb23c4183888ed6bdc9ab24b109f505395e00821
diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..60f17bc
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,2 @@
+venv
+.tox