VOL-1076: CIG OLT Adapter Integration

Add CIG OLT Adapter with new proto files

Change-Id: Ie3d9d9d7544bd8884585bdf334150c249a4cdff3
diff --git a/docker/Dockerfile.voltha_d b/docker/Dockerfile.voltha_d
index a8ab938..b65c9af 100644
--- a/docker/Dockerfile.voltha_d
+++ b/docker/Dockerfile.voltha_d
@@ -32,6 +32,7 @@
 COPY --from=protos /protos/google/api /voltha/voltha/protos/third_party/google/api
 COPY --from=protos /protos/asfvolt16_olt /voltha/voltha/adapters/asfvolt16_olt/protos
 COPY --from=protos /protos/openolt /voltha/voltha/adapters/openolt/protos
+COPY --from=protos /protos/cig_olt /voltha/voltha/protos
 
 # Exposing process and default entry point
 # EXPOSE 8000