Update image for voltha-adtran-adapter in Berlin

* A new registry has been deployed at
  registry.berlin-lab.lfbroadband.org:443 with the new image provided by
  Adtran.

Signed-off-by: Cristina de Francisco <cristina.defrancisco@bisdn.de>
Change-Id: I77ebc806cbcf1440e5e9163e23c3b757aef82422
1 file changed