debian: stretch update

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>

lib/distro.conf

@@ -20,24 +20,6 @@ xenial-armhf-netboot)
 	BASE_IMAGE="generic/netboot"
 	NETINSTALL="initrd.gz"
 	;;
-yakkety-armhf-netboot)
-	#20-Apr-2016
-	#http://ports.ubuntu.com/dists/yakkety/main/installer-armhf/
-	NETIMAGE="20101020ubuntu483"
-	TEST_MD5SUM="a57b16aadf7c671e8e0a73c4fe66140d"
-	HTTP_IMAGE="http://ports.ubuntu.com/ubuntu-ports/dists"
-	BASE_IMAGE="generic/netboot"
-	NETINSTALL="initrd.gz"
-	;;
-zesty-armhf-netboot)
-	#20-Apr-2016
-	#http://ports.ubuntu.com/dists/zesty/main/installer-armhf/
-	NETIMAGE="20101020ubuntu504"
-	TEST_MD5SUM="e623775d9160d3ddb4a106f221a07d10"
-	HTTP_IMAGE="http://ports.ubuntu.com/ubuntu-ports/dists"
-	BASE_IMAGE="generic/netboot"
-	NETINSTALL="initrd.gz"
-	;;
 jessie-armhf-netboot)
 	#05-Dec-2017
 	#http://ftp.us.debian.org/debian/dists/jessie/main/installer-armhf/
@@ -48,10 +30,10 @@ jessie-armhf-netboot)
 	NETINSTALL="initrd.gz"
 	;;
 stretch-armhf-netboot)
-	#05-Dec-2017
+	#04-Mar-2018
 	#http://ftp.us.debian.org/debian/dists/stretch/main/installer-armhf/
-	NETIMAGE="20170615+deb9u2+b1"
-	TEST_MD5SUM="04e26c6bc5e28f60b03467a26729c836"
+	NETIMAGE="20170615+deb9u3"
+	TEST_MD5SUM="478503c259035845bf96a0a2ab46eef8"
 	HTTP_IMAGE="http://ftp.debian.org/debian/dists"
 	BASE_IMAGE="netboot"
 	NETINSTALL="initrd.gz"