autotest: Fix typos in autoserv SSP support for CTS

BUG=chromium:883403
TEST=Run autoserv manually for Skylab CTS test

Change-Id: I8c0c23953fffe6dea97d8b16177d74ca6d237736
Reviewed-on: https://chromium-review.googlesource.com/1241473
Commit-Ready: Allen Li <ayatane@chromium.org>
Tested-by: Allen Li <ayatane@chromium.org>
Reviewed-by: Congbin Guo <guocb@chromium.org>
diff --git a/server/autoserv b/server/autoserv
index 9760a65..04b55fe 100755
--- a/server/autoserv
+++ b/server/autoserv
@@ -650,9 +650,9 @@
         return True
     try:
         path = _control_path_on_disk(control_name)
-    except error.AutoservError:
+    except error.AutoservError as e:
         sys.stderr.write("autoserv: Could not determine control file path,"
-                         " assuming we need SSP: %s" % e)
+                         " assuming we need SSP: %s\n" % e)
         sys.stderr.flush()
         return True
     if not os.path.isfile(path):