added apt-mirror

Change-Id: Iaa690a04b4473c8b714c0cd27238136303843e96
diff --git a/mirror-image/scripts/network.sh b/mirror-image/scripts/network.sh
new file mode 100644
index 0000000..8f57c0f
--- /dev/null
+++ b/mirror-image/scripts/network.sh
@@ -0,0 +1,5 @@
+#!/bin/bash -xe
+echo "timeout 10;
+backoff-cutoff 0;
+initial-interval 0;
+retry 15;" >> /etc/dhcp/dhclient.conf