SSH has an exit code of 255 and prints out an error message when
it reaches a connection timeout.  We should catch this and return
a sensible exception.

Also, bit-shift all exit codes by 8 to match what we're now doing
in the client.

From: Jeremy Orlow <jorlow@google.com>
Signed-off-by: John Admanski <jadmanski@google.com>



git-svn-id: http://test.kernel.org/svn/autotest/trunk@1170 592f7852-d20e-0410-864c-8624ca9c26a4

client/common_lib/error.py

diff --git a/client/common_lib/error.py b/client/common_lib/error.py
index 2559dd3..c3b5eeb 100644
--- a/client/common_lib/error.py
+++ b/client/common_lib/error.py
@@ -66,6 +66,11 @@
 	pass
 
 
+class AutoservSSHTimeout(AutoservError):
+	"""SSH experienced a connection timeout"""
+	pass
+
+
 class AutoservRunError(AutoservError):
 	"""\
 	Errors raised by one of the run functions.  Should always be