- add 0001-IMPORTANT-late-import-in-use_hub-thread-race-caused-.patch

Fixes a problem during tests runs with python 2.7:
  RuntimeError: no suitable implementation for this system: \
    AttributeError("'module' object has no attribute 'epolls'",)

OBS-URL: https://build.opensuse.org/package/show/devel:languages:python/python-eventlet?expand=0&rev=57

python-eventlet.spec

@@ -1,7 +1,7 @@
 #
 # spec file for package python-eventlet
 #
-# Copyright (c) 2018 SUSE LINUX GmbH, Nuernberg, Germany.
+# Copyright (c) 2019 SUSE LINUX GmbH, Nuernberg, Germany.
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -25,6 +25,8 @@ License:        MIT
 Group:          Development/Languages/Python
 URL:            http://eventlet.net
 Source:         https://files.pythonhosted.org/packages/source/e/eventlet/eventlet-%{version}.tar.gz
+# # PATCH-FIX-UPSTREAM 0001-IMPORTANT-late-import-in-use_hub-thread-race-caused-.patch -- https://github.com/eventlet/eventlet/commit/77bccbe48d4d9a46982b2e0503e76784e76b066a
+Patch0:         0001-IMPORTANT-late-import-in-use_hub-thread-race-caused-.patch
 BuildRequires:  %{python_module Sphinx}
 BuildRequires:  %{python_module greenlet}
 BuildRequires:  %{python_module setuptools}
@@ -63,6 +65,7 @@ for Python that allows changing how code is run.
 
 %prep
 %setup -q -n eventlet-%{version}
+%patch0 -p1
 sed -i '/enum.compat/d' setup.py # crude way to drop the strange "enum-compat" requirement
 sed -i "s|^#!.*||" eventlet/support/greendns.py # Fix non-executable script