distro: debian wheezy: bump md5sum

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

lib/distro.conf

@@ -64,7 +64,7 @@ wheezy-armhf-netboot)
 	#08-Feb-2014
 	#http://ftp.us.debian.org/debian/dists/wheezy/main/installer-armhf/
 	NETIMAGE="20130613+deb7u1+b2"
-	TEST_MD5SUM="6a0197b064a9cdd23b25e93bc69e9221"
+	TEST_MD5SUM="2b2df527d1813e58c59c7fe4d769c7fd"
 	HTTP_IMAGE="http://ftp.debian.org/debian/dists"
 	BASE_IMAGE="mx5/netboot/efikamx"
 	UBOOTWRAPPER=1