Corrected the no. of links for Spine topo reroute test

Change-Id: If7bdb37126128dfbfaaf32e6ce0c3573aa50612c
diff --git a/TestON/tests/CHOtest/CHOtest.py b/TestON/tests/CHOtest/CHOtest.py
index 8e9b609..cfbef1f 100644
--- a/TestON/tests/CHOtest/CHOtest.py
+++ b/TestON/tests/CHOtest/CHOtest.py
@@ -1783,7 +1783,7 @@
         topology_output = main.ONOScli1.topology()
         linkDown = main.ONOSbench.checkStatus(
             topology_output, main.numMNswitches, str(
-                int( main.numMNlinks ) - 8 ))
+                int( main.numMNlinks ) - 4 ))
         utilities.assert_equals(
             expect=main.TRUE,
             actual=linkDown,
@@ -1907,7 +1907,7 @@
         topology_output = main.ONOScli1.topology()
         linkDown = main.ONOSbench.checkStatus(
             topology_output, main.numMNswitches, str(
-                int( main.numMNlinks ) - 8 ))
+                int( main.numMNlinks ) - 4 ))
         utilities.assert_equals(
             expect=main.TRUE,
             actual=linkDown,