monkey: trap SIGHUP in shell before launching

Change-Id: Ia79361858baa72970ba15d2d1ce0290d0bd38967
Signed-off-by: Dima Zavin <dima@android.com>
diff --git a/cmds/monkey/monkey b/cmds/monkey/monkey
index 45f43a4..bbe27f6 100755
--- a/cmds/monkey/monkey
+++ b/cmds/monkey/monkey
@@ -3,5 +3,6 @@
 #
 base=/system
 export CLASSPATH=$base/framework/monkey.jar
+trap "" HUP
 exec app_process $base/bin com.android.commands.monkey.Monkey $*