Changed "public" IP to avoid ssh proxy clashing issues with other labs...

Changed "public" IP to avoid ssh proxy clashing issues with other labs leveraging the default network IP values.

conf/lab2a/deploy/network-settings.yaml

@@ -59,11 +59,11 @@ public_network:
   enabled: true
   network_type: ''
   bridged_interface: ''
-  cidr: 192.168.37.0/24
-  gateway: 192.168.37.1
-  floating_ip_range: 192.168.37.200,192.168.37.220
-  usable_ip_range: 192.168.37.10,192.168.37.199
-  provisioner_ip: 192.168.37.1
+  cidr: 192.168.57.0/24
+  gateway: 192.168.57.1
+  floating_ip_range: 192.168.57.200,192.168.57.220
+  usable_ip_range: 192.168.57.10,192.168.57.199
+  provisioner_ip: 192.168.57.1
 
 # "storage" is an optional network used by storage backends.
 # You can configure this network in order to reduce load on