Parametrize the keyboard test so that it can run in hwqual. Add to hwqual suite.

client/site_tests/hardware_KeyboardAssembly/hardware_KeyboardAssembly.py

Index: client/site_tests/hardware_KeyboardAssembly/hardware_KeyboardAssembly.py
diff --git a/client/site_tests/hardware_KeyboardAssembly/hardware_KeyboardAssembly.py b/client/site_tests/hardware_KeyboardAssembly/hardware_KeyboardAssembly.py
index b60fa8b93cfb15f7fcb60f85f9925a3d2d3f0725..27f863ef76b3b209d136d3ceda396c8a0a59c8ec 100644
--- a/client/site_tests/hardware_KeyboardAssembly/hardware_KeyboardAssembly.py
+++ b/client/site_tests/hardware_KeyboardAssembly/hardware_KeyboardAssembly.py
@@ -2,7 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-import logging, os, re, utils
+import os, utils
 from autotest_lib.client.bin import test
 from autotest_lib.client.common_lib import error
 
@@ -11,10 +11,19 @@ class hardware_KeyboardAssembly(test.test):
     preserve_srcdir = True
 
 
-    def run_once(self):
+    def run_once(self, restart_ui=False):
 
         # kill chrome
         utils.system('/sbin/initctl stop ui', ignore_status=True)
 
         os.chdir(self.srcdir)
-        utils.system('./start_test.sh')
+        args = ''
+        if restart_ui:
+            args += '--exit-on-error'
+        status = utils.system('./start_test.sh ' + args, ignore_status=True)
+
+        if restart_ui:
+            utils.system('/sbin/initctl start ui', ignore_status=True)
+
+        if status:
+            raise error.TestFail('Test failed.')