Specify fake AllocationPool for MOSK BM lab

Neutron's portprobbrer could steal ip address from pool
 and cause duplication of IP addresses.

MOSSUST-118

Change-Id: I35a0b970d101af4a96e6dce42e06077ef4c5a814
diff --git a/bm_mcc_mosk/mcc_seed_2401.yaml b/bm_mcc_mosk/mcc_seed_2401.yaml
index fa01aaa..09a968a 100644
--- a/bm_mcc_mosk/mcc_seed_2401.yaml
+++ b/bm_mcc_mosk/mcc_seed_2401.yaml
@@ -20,10 +20,10 @@
     default: false
   seed_subnet_pool_start:
     type: string
-    default: 172.16.180.3
+    default: 172.16.181.252
   seed_subnet_pool_end:
     type: string
-    default: 172.16.180.61
+    default: 172.16.181.254
   nameservers:
     type: comma_delimited_list
     default: '172.18.176.6,172.16.180.1,8.8.8.8'
@@ -71,6 +71,9 @@
       gateway_ip: { get_param: seed_subnet_gateway_ip }
       cidr: { get_param: seed_subnet_cidr }
       enable_dhcp: { get_param: seed_subnet_dhcp }
+      allocation_pools:
+        - start: { get_param: seed_subnet_pool_start }
+          end: { get_param: seed_subnet_pool_end }
       dns_nameservers: { get_param: nameservers }
 
   seed_port01: