ADTRAN: Update to containerized adapters.
Loading and running but still needs about a week or so of work to
catch up to where the OpenOLT/ONU containerized adapters are

Change-Id: I5522232e21dd76b3f95b4698af6c7e4cef96753d
diff --git a/docker/Dockerfile.adapter_adtran_onu b/docker/Dockerfile.adapter_adtran_onu
index 3484dfb..be729a1 100644
--- a/docker/Dockerfile.adapter_adtran_onu
+++ b/docker/Dockerfile.adapter_adtran_onu
@@ -21,6 +21,7 @@
 
 # Adtran specific
 COPY adapters/adtran_olt /voltha/adapters/adtran_onu
+COPY VERSION /voltha
 
 # Exposing process and default entry point
 CMD ["python", "/voltha/adapters/adtran_onu/main.py"]