autotest: Move hostap_config.py to server/cros/network

TEST=Ran check11b successfully.  This indicates that objects were
imported and instantiated correctly.
BUG=chromium:258537

Change-Id: Icfb68a218ca54a019610a342188469c26a706af3
Reviewed-on: https://gerrit.chromium.org/gerrit/61362
Tested-by: Christopher Wiley <wiley@chromium.org>
Reviewed-by: Paul Stewart <pstew@chromium.org>
Commit-Queue: Christopher Wiley <wiley@chromium.org>
diff --git a/server/site_linux_router.py b/server/site_linux_router.py
index 9bac1a6..1a3c4e1 100644
--- a/server/site_linux_router.py
+++ b/server/site_linux_router.py
@@ -8,7 +8,7 @@
 from autotest_lib.client.common_lib import error
 from autotest_lib.server import site_linux_system
 from autotest_lib.server.cros import wifi_test_utils
-from autotest_lib.server.cros.wlan import hostap_config
+from autotest_lib.server.cros.network import hostap_config
 
 def isLinuxRouter(host):
     """Check if host is a linux router.