Fix travis test

cli/tests/test_interaction.py

@@ -5,11 +5,8 @@ import time
 
 class TestInteraction(unittest.TestCase):
     def test_keyboard_interrupt(self):
-
-        p = pexpect.spawn('/bin/bash -c "python lesspass/core.py --prompt"')
-        time.sleep(1)
-
+        p = pexpect.spawn('/bin/bash -c "python3 lesspass/core.py --prompt"')
+        p.expect("Site: ")
         p.kill(signal.SIGINT)
         p.expect(pexpect.EOF)
-
-        self.assertEqual(p.before, b'Site: ')
+        self.assertEqual(p.before, b"")