test: Increase coverage a bit more.

caucase/test.py

@@ -1711,13 +1711,15 @@ class CaucaseTest(unittest.TestCase):
           '--db', server_db2,
           '--import-ca', exported_ca,
           '--import-crl', self._client_crl,
+          # Twice, for code coverage...
+          '--import-crl', self._client_crl,
         ),
       )
       self.assertTrue(os.path.exists(server_db2), server_db2)
       self.assertEqual(
         [
           'Imported 1 CA certificates',
-          'Revoked 1 certificates (0 were already revoked)',
+          'Revoked 1 certificates (1 were already revoked)',
         ],
         stdout.getvalue().splitlines(),
       )