Configure pytest to run doctests

The pytest.ini file needs to be in or above the directory py.test is called in.
When in IPA project root, this invocation will find ./ipatests/pytest.ini:
    py.test ipatests/
but these will not (they're equivalent):
    py.test .
    py.test
So pytest.ini must be in the project root.

However, setupttols can't include files outside package directories,
so we also need this file to be under ipatests/

Solve the problem by symlinking ./pytest.ini to ipatests/pytest.ini.

https://fedorahosted.org/freeipa/ticket/4610

Reviewed-By: Tomas Babej <tbabej@redhat.com>

ipatests/pytest.ini

@@ -1,2 +1,19 @@
+# pytest configuration
+
+# This file lives in ipatests/pytest.ini, so it can be included by setup.py,
+# and it's symlinked from the project's root directory, so py.test finds it
+# when called with no arguments.
+
 [pytest]
 python_classes = test_ Test
+addopts = --doctest-modules
+            # Ignore files for doc tests.
+            # TODO: ideally, these should all use __name__=='__main__' guards
+          --ignore=setup.py
+          --ignore=setup-client.py
+          --ignore=checks/check-ra.py
+          --ignore=daemons/ipa-otpd/test.py
+          --ignore=doc/examples/python-api.py
+          --ignore=install/share/copy-schema-to-ca.py
+          --ignore=install/share/wsgi.py
+          --ignore=ipapython/py_default_encoding/setup.py