[image]: add debian security update in the apt source list (#724)

lguohan · qiluo-msft · commit d6a086f8a50f · 2017-06-21T17:59:03.000-07:00
diff --git a/files/image_config/apt/sources.list.d/debian_archive_trafficmanager_net_debian.list b/files/image_config/apt/sources.list.d/debian_archive_trafficmanager_net_debian.list
@@ -1 +1,2 @@
 deb http://debian-archive.trafficmanager.net/debian/ jessie main contrib non-free
+deb http://debian-archive.trafficmanager.net/debian-security/ jessie/updates main contrib non-free

Original file line number	Diff line number	Diff line change
`@@ -1 +1,2 @@`
`1`	`1`	`deb http://debian-archive.trafficmanager.net/debian/ jessie main contrib non-free`
	`2`	`+deb http://debian-archive.trafficmanager.net/debian-security/ jessie/updates main contrib non-free`