Adding the adtran olt user

Change-Id: Idb2ce5385cb561d5360e8753ac278804881e78a5
diff --git a/deployment-configs/dt-berlin-pod-gpon-adtran-DT.yaml b/deployment-configs/dt-berlin-pod-gpon-adtran-DT.yaml
index 468549d..47df6bb 100644
--- a/deployment-configs/dt-berlin-pod-gpon-adtran-DT.yaml
+++ b/deployment-configs/dt-berlin-pod-gpon-adtran-DT.yaml
@@ -55,6 +55,7 @@
       aggPort: 3
       serial: LBADTN2038AD991
       type: adtranolt
+      user: hsvroot
  
   hosts:
     src: