Update octavia playbooks parameters

StackAction no longer conditions generate_certs.
Forward OctaviaGenerateCerts to the playbooks and add StackAction value
as parameter, the need of creating certificates is now handled in the
ansible playbook.

Change-Id: I9aaeec1d9f8623cbd99b2f83254dda038651f0a2
Related-Bug: #1849548

deployment/octavia/octavia-deployment-config.j2.yaml

@@ -200,13 +200,6 @@ conditions:
       - raw
     - get_param: NovaEnableRbdBackend
 
-  generate_certs:
-      and:
-      - get_param: OctaviaGenerateCerts
-      - equals:
-        - get_param: StackAction
-        - CREATE
-
 resources:
 {% if not octavia_standalone %}
   default_key_pair:
@@ -246,7 +239,7 @@ resources:
           server_certs_key_passphrase: {get_param: OctaviaServerCertsKeyPassphrase}
           ca_passphrase: { get_param: OctaviaCaKeyPassphrase }
           client_cert_path: { get_param: OctaviaClientCertFile }
-          generate_certs: {if: [generate_certs, true, false]}
+          generate_certs: { get_param: OctaviaGenerateCerts }
           mgmt_port_dev: { get_param: OctaviaMgmtPortDevName }
           os_password: { get_param: AdminPassword }
           os_project_name: 'admin'
@@ -258,6 +251,7 @@ resources:
           octavia_group_vars_dir: "{{playbook_dir}}/octavia-ansible/group_vars"
           container_cli: { get_param: ContainerCli }
           enable_log_offloading: { get_param: OctaviaLogOffload }
+          stack_action: { get_param: StackAction }
 
 outputs:
   role_data: