ipv4/ipv6 w/t dhcp support and routers.

Introducing ipv4/ipv6 with dhcp support. Note here
that tests might fail from time to time, this needs further
investigation. Further, introducing external routing support
for ipv4.

Change-Id: I64450f4082e47b835ae2e967a98a36fe69a059c3
diff --git a/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/json/COMCAST_CONFIG_ipv4=1_ipv6=0_dhcp=1_routers=0.chart b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/json/COMCAST_CONFIG_ipv4=1_ipv6=0_dhcp=1_routers=0.chart
new file mode 100644
index 0000000..8fc87ff
--- /dev/null
+++ b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/json/COMCAST_CONFIG_ipv4=1_ipv6=0_dhcp=1_routers=0.chart
@@ -0,0 +1,4 @@
+{
+  "ipv4": {"expect": "True",
+    "hosts":["h1v4", "h2v4" ,"h3v4", "h4v4", "h5v4", "h6v4", "h7v4", "h8v4", "h9v4", "h10v4", "h11v4"]}
+}