Assign IPs for neutron dynamic routing

Neutron dynamic routing reques extra 6 IPs on br-public interface
This patch reserve them for internal usage and assign to interface.

Related-Prod: PRODX-31417
Change-Id: I40dba97db590f9bccd2141c68c2003a31ab19724
diff --git a/de/heat-templates/env/mstr1-wrkr3-cmp2-ntw3-vmx.yaml b/de/heat-templates/env/mstr1-wrkr3-cmp2-ntw3-vmx.yaml
index 62f54cd..b160edc 100644
--- a/de/heat-templates/env/mstr1-wrkr3-cmp2-ntw3-vmx.yaml
+++ b/de/heat-templates/env/mstr1-wrkr3-cmp2-ntw3-vmx.yaml
@@ -39,7 +39,7 @@
   metallb_address_pools: '10.11.12.201-10.11.12.254'
   private_floating_network_cidr: '10.11.12.0/24'
   private_floating_network_ipam_pool_start: '10.11.12.3'
-  private_floating_network_ipam_pool_end: '10.11.12.99'
+  private_floating_network_ipam_pool_end: '10.11.12.70'
   private_floating_network_gateway: '10.11.12.1'
   control_network_ext_router_ip: '10.10.0.131'
   tun_network_ext_router_ip: '10.15.0.131'