jmri: add Phase 4 TigerVNC server on :1 (port 5901) — replaces X11 forwarding

ansible/group_vars/all/vars

@@ -43,3 +43,5 @@ step_ca_principal_mappings:
 # Leviton My Leviton API
 leviton_email: "{{ vault_leviton_email }}"
 leviton_password: "{{ vault_leviton_password }}"
+
+jmri_vnc_password: "{{ vault_jmri_vnc_password }}"