Merge branch 'stable-3.5'

* stable-3.5:
  Make DynamoDBRefDatebase class implement ExtendedGlobalRefDatabase
  computeAndPut should return false instead  throwing exception
  Consume global-refdb directly from source
  Bump global-refdb to v3.4.8.6
  Add AWS credentials profile name parameter

Change-Id: I390151a6eb11eb56dc67eb413575b1941e435393