increase grading script timeout

Author: larat7

conf/lab.mk

@@ -1,2 +1,2 @@
 LAB=3
-PACKAGEDATE=Fri Sep 22 14:09:05 EDT 2017
+PACKAGEDATE=Mon Oct 16 19:29:03 EDT 2017

gradelib.py

@@ -436,7 +436,7 @@ def run_qemu_kw(target_base="qemu", make_args=[], timeout=30):
     def __monitor_start(self, output):
         if b"\n" in output:
             try:
-                self.gdb = GDBClient(self.qemu.get_gdb_port(), timeout=2)
+                self.gdb = GDBClient(self.qemu.get_gdb_port(), timeout=30)
                 raise TerminateTest
             except socket.error:
                 pass