acloud: fix py3 compatible issue: TypeError: cannot use a bytes pattern on a string-like object

import six.b can work both py2 and py3.

BUG: 137195528
BUG: 145566087
Test: acloud-dev create
acloud-dev create --local-image
acloud-dev create --local-instance -y
acloud-dev create --local-instance --local-image -y
acloud-dev setup

Change-Id: I3acd3766d1036d2dad9971acfb7b355641fbc8fb
diff --git a/setup/host_setup_runner_test.py b/setup/host_setup_runner_test.py
index 111540e..e435be6 100644
--- a/setup/host_setup_runner_test.py
+++ b/setup/host_setup_runner_test.py
@@ -17,6 +17,7 @@
 import tempfile
 import unittest
 import mock
+from six import b
 
 from acloud.internal.lib import driver_test_lib
 from acloud.internal.lib import utils
@@ -29,13 +30,13 @@
 class CuttlefishHostSetupTest(driver_test_lib.BaseDriverTest):
     """Test CuttlsfishHostSetup."""
 
-    LSMOD_OUTPUT = """nvidia_modeset        860160  6 nvidia_drm
+    LSMOD_OUTPUT = b("""nvidia_modeset        860160  6 nvidia_drm
 module1                12312  1
 module2                12312  1
 ghash_clmulni_intel    16384  0
 aesni_intel           167936  3
 aes_x86_64             20480  1 aesni_intel
-lrw                    16384  1 aesni_intel"""
+lrw                    16384  1 aesni_intel""")
 
     # pylint: disable=invalid-name
     def setUp(self):