refactor trellis.p4 topology

Change-Id: Ib275175d402b9ec3b5146474994008c56594330b
diff --git a/trellis/trellisp4.json b/trellis/trellisp4.json
index 5fa8849..44bb6a6 100644
--- a/trellis/trellisp4.json
+++ b/trellis/trellisp4.json
@@ -4,7 +4,7 @@
             "interfaces" : [
                 {
                     "name": "h1",
-                    "ips" : [ "10.0.10.254/24" ],
+                    "ips" : [ "10.0.2.254/24" ],
                     "vlan-untagged": 10
                 }
             ]
@@ -13,7 +13,7 @@
             "interfaces" : [
                 {
                     "name": "h2",
-                    "ips" : [ "10.0.10.254/24" ],
+                    "ips" : [ "10.0.2.254/24" ],
                     "vlan-untagged": 10
                 }
             ]
@@ -22,7 +22,7 @@
             "interfaces" : [
                 {
                     "name": "h3",
-                    "ips" : [ "10.0.20.254/24" ],
+                    "ips" : [ "10.0.3.254/24" ],
                     "vlan-untagged": 20
                 }
             ]
@@ -31,7 +31,7 @@
             "interfaces" : [
                 {
                     "name": "h4",
-                    "ips" : [ "10.0.20.254/24" ],
+                    "ips" : [ "10.0.3.254/24" ],
                     "vlan-untagged": 20
                 }
             ]