Tripleo-common roles tests fails locally but not on CI

[Adriano Petrich]

Running tox locally with expected type being str but the code is using unicode

$ tox -e py27

Traceback (most recent call last):
  File "tripleo_common/tests/utils/test_roles.py", line 98, in test_validate_role_yaml
    role = rolesutils.validate_role_yaml(SAMPLE_ROLE)
  File "tripleo_common/utils/roles.py", line 122, in validate_role_yaml
    raise RoleMetadataError(msg)
tripleo_common.exception.RoleMetadataError: Role 'sample': HostnameFormatDefault is not of expected type <type 'str'>
======================================================================
FAIL: tripleo_common.tests.utils.test_roles.TestRolesUtils.test_validate_role_yaml_with_file
tags: worker-2
----------------------------------------------------------------------
Traceback (most recent call last):
  File "tripleo_common/tests/utils/test_roles.py", line 104, in test_validate_role_yaml_with_file
    r = rolesutils.validate_role_yaml(role_path='/foo.yaml')
  File "tripleo_common/utils/roles.py", line 122, in validate_role_yaml
    raise RoleMetadataError(msg)
tripleo_common.exception.RoleMetadataError: Role 'sample': HostnameFormatDefault is not of expected type <type 'str'>
======================================================================
FAIL: tripleo_common.tests.utils.test_roles.TestRolesUtils.test_generate_roles_data_from_directory
tags: worker-3
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/frac/Code/tripleo-common/.tox/py27/lib/python2.7/site-packages/mock/mock.py", line 1305, in patched
    return func(*args, **keywargs)
  File "tripleo_common/tests/utils/test_roles.py", line 84, in test_generate_roles_data_from_directory
    ['foo', 'bar'])
  File "tripleo_common/utils/roles.py", line 74, in generate_roles_data_from_directory
    validate_role_yaml(role_path=file_path)
  File "tripleo_common/utils/roles.py", line 122, in validate_role_yaml
    raise RoleMetadataError(msg)
tripleo_common.exception.RoleMetadataError: Role 'sample': HostnameFormatDefault is not of expected type <type 'str'>

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/476896
Committed: https://git.openstack.org/cgit/openstack/tripleo-common/commit/?id=fbf557d13c8d2d4060574eef3a4d2fbe84f4a1ce
Submitter: Jenkins
Branch: master

commit fbf557d13c8d2d4060574eef3a4d2fbe84f4a1ce
Author: Dougal Matthews <email address hidden>
Date: Fri Jun 23 12:44:04 2017 +0100

    Use six to correctly handle text in Python 2 and 3 in the Role schema

    Change-Id: I23a7dab693ff39377ee1e012aec106bc5b7aed0e
    Closes-Bug: #1700924

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/tripleo-common 7.4.0 release.