Code commit to Secure the gRPC Channel between PONSIM Adapter and PONSIM OLT.

Change-Id: I76b6573ef9c255cc9ae153ed0e3b04daa68958c7
diff --git a/docker/Dockerfile.voltha b/docker/Dockerfile.voltha
index f47f9c0..6f6ce6f 100644
--- a/docker/Dockerfile.voltha
+++ b/docker/Dockerfile.voltha
@@ -26,6 +26,7 @@
 ENV PYTHONPATH=/voltha
 COPY common /voltha/common
 COPY voltha /voltha/voltha
+COPY pki /voltha/pki
 
 # Exposing process and default entry point
 # EXPOSE 8000