Added functionality for dropping links in routing tests.

Change-Id: I0c4fd3b41323fd849e47b52bfb00db7488a32492
diff --git a/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/linkFailure/COMCAST_CONFIG_ipv4=0_ipv6=1_dhcp=1_routers=1.linkFailureChart b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/linkFailure/COMCAST_CONFIG_ipv4=0_ipv6=1_dhcp=1_routers=1.linkFailureChart
new file mode 100644
index 0000000..9d971dd
--- /dev/null
+++ b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/linkFailure/COMCAST_CONFIG_ipv4=0_ipv6=1_dhcp=1_routers=1.linkFailureChart
@@ -0,0 +1,19 @@
+{
+    "link_batch_1" : { "links" : { "link1" : ["leaf1", "spine101"],
+		      		   "link2" : ["leaf2", "spine101"],
+	              		   "link3" : ["leaf3", "spine101"],
+		      		   "link4" : ["leaf4", "spine101"],
+		      	           "link5" : ["leaf5", "spine101"] },
+			"links_before" : 40,
+			"links_after" : 22 },
+    "link_batch_2" : { "links" : { "link1" : ["leaf1", "spine102"],
+		      		   "link2" : ["leaf2", "spine102"],
+	              		   "link3" : ["leaf3", "spine102"],
+		      		   "link4" : ["leaf4", "spine102"],
+		      	           "link5" : ["leaf5", "spine102"] },
+			"links_before" : 40,
+			"links_after" : 22 }
+	
+	
+}
+