The following related tests in 'barbican-vault-devstack-functional' jenkins
job should pass with this patch:
test_secret_get_nones_payload_with_a_octet_stream
test_secret_create_defaults_valid_types_and_encoding
test_secret_create_with_secret_type
This patch also enables kv version 1 in Vault, otherwise the Vault API
interaction in castellan will fail.
Change-Id: Id3b2503b2adb4f1f5eff55bb22f41d904232c284
Story: 2002976
Task: 22984