Add memory on cfg, ctl and mon nodes

- After moving on day01 image, cfg01 node requires more memory
  for additional services (jenkins, maas)
- ctl nodes are not fit into 12Gb anymore
- mon nodes must have enough memory for StackLight docker
  containers, 2Gb is too low

Change-Id: Iecfc4d118e7581e86a4d1121ea9bf9978110d81d
diff --git a/tcp_tests/templates/virtual-mcp-ocata-ceph-offline/underlay.yaml b/tcp_tests/templates/virtual-mcp-ocata-ceph-offline/underlay.yaml
index 47120d5..c32f875 100644
--- a/tcp_tests/templates/virtual-mcp-ocata-ceph-offline/underlay.yaml
+++ b/tcp_tests/templates/virtual-mcp-ocata-ceph-offline/underlay.yaml
@@ -236,7 +236,7 @@
             role: salt_master
             params:
               vcpu: !os_env SLAVE_NODE_CPU, 2
-              memory: !os_env SLAVE_NODE_MEMORY, 4096
+              memory: !os_env SLAVE_NODE_MEMORY, 8192
               boot:
                 - hd
               cloud_init_volume_name: iso