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.base b/docker/Dockerfile.base
index b65e77b..8e9d461 100644
--- a/docker/Dockerfile.base
+++ b/docker/Dockerfile.base
@@ -35,7 +35,7 @@
 
 COPY pki /voltha/pki/
 
-# Adtran specific
+# Adtran specific (common library and debug support)
 COPY adapters/adtran_common /voltha/adapters/adtran_common
 COPY pydevd /voltha/pydevd