Get tests/run_tests.py to read the nose.cfg file

Signed-off-by: Gora Khargosh <gora.khargosh@gmail.com>
diff --git a/tests/run_tests.py b/tests/run_tests.py
index 854f370..814ea88 100755
--- a/tests/run_tests.py
+++ b/tests/run_tests.py
@@ -54,8 +54,7 @@
     config_path = path_join(parent_dir_path, 'nose.cfg')
 
     argv = [__file__]
-    argv += '--with-doctest --with-coverage'.split()
-    argv += ['--cover-package=%s' % ','.join(cover_packages)]
-    #argv += ['--config=%s' % config_path]
-    argv += ['--verbosity=3']
+    argv.append('--with-coverage')
+    argv.append('--cover-package=%s' % ','.join(cover_packages))
+    argv.append('--config=%s' % config_path)
     nose.run(argv=argv)