Add conftest.py in order to fix pytest loading issues.

.github/workflows/main.yml

@@ -90,7 +90,7 @@ jobs:
         if: ${{ contains(matrix.docker, 'fedora') }}
       - run: pip install coveralls
       - uses: actions/checkout@v2
-      - run: python3 -m pytest
+      - run: pytest
       - run: python3 -m cProfile -o profile.stats lint.py -V test/source/* test/binary/* > /dev/null
       - run: python3 test/dump_stats.py profile.stats
       - name: Collect the coveralls report

MANIFEST.in

@@ -1,6 +1,7 @@
 include Makefile
 include COPYING
 include README.md
+include conftest.py
 recursive-include configs *.toml
 recursive-include rpmlint *.toml
 recursive-include test *

conftest.py

@@ -0,0 +1 @@
+# Having this file, pytest will add project root to sys.path.