- update to 3.6.2
- add python-mock to buildrequires
- fix test command
- add python_mock.patch to use stdlib mock library on py3

- Update to version 3.6.0
+ Features
* Revamp the internals of the ``pytest.mark`` implementation with correct per
node handling which fixes a number of long standing bugs caused by the old
design. This introduces new ``Node.iter_markers(name)`` and
``Node.get_closest_mark(name)`` APIs. Users are **strongly encouraged** to
read the `reasons for the revamp in the docs
`_,
or jump over to details about `updating existing code to use the new APIs
`_. (`#3317
`_)
* Now when ``@pytest.fixture`` is applied more than once to the same function a
``ValueError`` is raised. This buggy behavior would cause surprising problems
and if was working for a test suite it was mostly by accident. (`#2334
`_)
* Support for Python 3.7's builtin ``breakpoint()`` method, see `Using the
builtin breakpoint function
`_ for
details. (`#3180 `_)
* ``monkeypatch`` now supports a ``context()`` function which acts as a context
manager which undoes all patching done within the ``with`` block. (`#3290
`_)
* The ``--pdb`` option now causes KeyboardInterrupt to enter the debugger,
instead of stopping the test session. On python 2.7, hitting CTRL+C again
exits the debugger. On python 3.2 and higher, use CTRL+D. (`#3299