Revert failing tests and use v3 for ec2 tokens

Domain users are not supported anymore on v2, so we need to use v3 by
default when authenticating ec2 access.

Change-Id: Ia7ca08bca612b4555f6b4d9098cd7db6c540b1c4
Closes-Bug: #1484086
3 files changed
tree: 0f627962b6acd03dec1bdd740781fd52bb617e34
  1. common/
  2. functional/
  3. scenario/