feat: add step about no_proxy for openbao

Author: jackhodgkiss

doc/source/configuration/openbao.rst

@@ -111,13 +111,26 @@ Setup OpenBao on the seed node
 Setup OpenBao HA on the overcloud hosts
 ---------------------------------------
 
-1. Run secret-store-deploy-overcloud.yml custom playbook
+1. Ensure ``no_proxy`` has been configured to include the first controller's internal network IP if using walled garden append if necessary
+
+   .. code-block:: yaml
+      :caption: ``inventory/group_vars/overcloud/proxy.yml``
+
+      ---
+      no_proxy:
+        - "{{ lookup('vars', internal_net_name ~ '_ips')[groups.controllers.0] }}"
+
+   .. code-block:: bash
+
+      kayobe overcloud host configure -t proxy
+
+2. Run secret-store-deploy-overcloud.yml custom playbook
 
    .. code-block:: bash
 
       kayobe playbook run $KAYOBE_CONFIG_PATH/ansible/secret-store-deploy-overcloud.yml
 
-2. Encrypt overcloud openbao keys (use proper location of vault password file)
+3. Encrypt overcloud openbao keys (use proper location of vault password file)
 
    .. code-block:: bash