Revert: tornado 5.1 breaks salt (boo#1101780)

OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/python-tornado?expand=0&rev=50

python-tornado.spec

@@ -16,16 +16,18 @@
 #
 
 
-%{?!python_module:%define python_module() python-%{**} python3-%{**}}
 %bcond_without python2
+%{?!python_module:%define python_module() python-%{**} python3-%{**}}
 Name:           python-tornado
-Version:        5.1
+Version:        4.5.3
 Release:        0
 Summary:        Open source version of scalable, non-blocking web server that power FriendFeed
 License:        Apache-2.0
 Group:          Development/Languages/Python
-URL:            http://www.tornadoweb.org
+Url:            http://www.tornadoweb.org
 Source:         https://files.pythonhosted.org/packages/source/t/tornado/tornado-%{version}.tar.gz
+Patch0:         tornado-async-deprecations.patch
+Patch1:         tornado-testsuite_timeout.patch
 BuildRequires:  %{python_module devel}
 BuildRequires:  %{python_module pycurl}
 BuildRequires:  %{python_module setuptools}
@@ -88,6 +90,8 @@ thousands of clients, see The C10K problem.)
 %setup -q -n tornado-%{version}
 # Fix non-executable script rpmlint issue:
 find demos tornado -name "*.py" -exec sed -i "/#\!\/usr\/bin\/.*/d" {} \;
+%patch0 -p1
+%patch1 -p1
 
 %pre
 # remove egg-info _file_, being replaced by an egg-info directory
@@ -108,8 +112,7 @@ export ASYNC_TEST_TIMEOUT=30
 %python_exec -m tornado.test.runtests
 
 %files %{python_files}
-%license LICENSE
-%doc demos
+%doc demos LICENSE
 %{python_sitearch}/tornado
 %{python_sitearch}/tornado-%{version}-py*.egg-info