Reduce the volume size used by the instances

Jobs on jenkins failing due to volume quota issues so this change
reduces the volume sizes in an attempt to see if it will help reduce
no of issues we face.

Please note that the flavors in the heat environment file are specific
to Frankfurt region and will not work for Karlskrona as the City has
different flavors in different regions.

Change-Id: I1f3087cbc10dd2a20eafe503322d40e201c5a3c1
diff --git a/playbooks/roles/bootstrap-hwconfig/files/heat-environment-city-ubuntu1804.yaml b/playbooks/roles/bootstrap-hwconfig/files/heat-environment-city-ubuntu1804.yaml
index 2829c2f..88432de 100644
--- a/playbooks/roles/bootstrap-hwconfig/files/heat-environment-city-ubuntu1804.yaml
+++ b/playbooks/roles/bootstrap-hwconfig/files/heat-environment-city-ubuntu1804.yaml
@@ -23,20 +23,20 @@
 parameters:
   # parameters for jumphost
   jumphost_image: 'Ubuntu 18.04 Bionic Beaver'
-  jumphost_flavor: 2C-4GB-50GB
-  jumphost_volume_size: 150
+  jumphost_flavor: 2C-4GB-10GB
+  jumphost_volume_size: 50
 
   # parameters for master nodes
   no_of_master_nodes: 1
   master_image: 'Ubuntu 18.04 Bionic Beaver'
-  master_flavor: 2C-4GB-50GB
-  master_volume_size: 150
+  master_flavor: 2C-4GB-10GB
+  master_volume_size: 50
 
   # parameters for worker nodes
   no_of_worker_nodes: 1
   worker_image: 'Ubuntu 18.04 Bionic Beaver'
-  worker_flavor: 2C-4GB-50GB
-  worker_volume_size: 150
+  worker_flavor: 2C-4GB-10GB
+  worker_volume_size: 50
 
   # common parameters
   public_network: ext-net