The unit tests mock tokens from keystoneauth. One of the responses
being returned from a mocked keystoneauth method was returning a v2.0
token that didn't have the right expiration attribute of a v2.0
token. This was caught by keystoneauth 3.0.1, which underwent a
significant refactor and added a bunch of new functionality for
version discovery. Keystoneauth was expecting `expires` to be
in the token but instead the mock was using `expires_at`, which isn't
a valid v2.0 token attribute.

Closes-Bug: 1706538

Change-Id: Iea77ef54585d0b3480369e9f5df629e3f46f7e3b

pycrypto is unmaintained for a while and requirements team advises using
pycryptodome or cryptography libraries instead (see openstack-dev thread
[0]).

troveclient uses pycrypto to generate random data/content in its tests
which does not require any specific cryptographic need. This commit
replaces it by os.urandom from Python standard library.

[0] http://lists.openstack.org/pipermail/openstack-dev/2017-March/113568.html

Change-Id: Ia43c5883a51e8412c4a238d127c13db39e863da1

HMAC key of OSprofiler can be configure in config files of Trove
not in api-paste.ini (configs in paste are deprecated).

Change-Id: I4904e5d0104e1cac12cc1f3e6dc38b6ef8372982

Fix a bunch of formatting issues with docstrings to allow us to turn on
the flag that treats warnings as errors to avoid mal-formed
documentation in the future.

Change-Id: Ic6fb73031e37314c49c41e4621dfd92b9c3f59d5
Signed-off-by: Doug Hellmann <doug@doughellmann.com>

Log messages are no longer being translated. This removes all use
of the _LE, _LI, and _LW translation markers to simplify logging
and to avoid confusion with new contributions

Change-Id: I848087a85fdc056c0b6ed6f9d597400c257afc8f