Fix cookied-cicd-bm-os-contrail40-maas deploy

- Increase cfg01 RAM from 8Gb to 16Gb
- Pre-generate id_rsa.pub before bootstrapping machines

Related-Bug: PROD-25848

Change-Id: I568f1b490ef49ab335230d3ff6316f7f47f0ef71
diff --git a/tcp_tests/templates/cookied-cicd-bm-os-contrail40-maas/underlay.yaml b/tcp_tests/templates/cookied-cicd-bm-os-contrail40-maas/underlay.yaml
index 6371014..e48b817 100644
--- a/tcp_tests/templates/cookied-cicd-bm-os-contrail40-maas/underlay.yaml
+++ b/tcp_tests/templates/cookied-cicd-bm-os-contrail40-maas/underlay.yaml
@@ -98,7 +98,7 @@
             role: salt_master
             params:
               vcpu: !os_env SLAVE_NODE_CPU, 4
-              memory: !os_env SLAVE_NODE_MEMORY, 8192
+              memory: !os_env SLAVE_NODE_MEMORY, 16384
               boot:
                 - hd
               volumes: