undocumented updates.

group_vars/all/main.yml

@@ -444,6 +444,7 @@ apt_webserver_pkgs:
   - ffmpeg
   - libmagickwand-dev
   - libgeoip-dev
+  - libaio-dev
   - tk-dev
   - tcl-dev
   - tclreadline
@@ -488,17 +489,17 @@ microcode_package: intel-microcode
 
 insert_ssh_keypair_backup_server: false
 
-ssh_keypair_backup_server: {}
+ssh_keypair_backup_server: []
 
 insert_root_ssh_keypair: false
 
-root_ssh_keypair: {}
+root_ssh_keypair: []
 
-default_user: {}
+default_user: []
 
-extra_user: {}
+extra_user: []
 
-sudo_users: {}
+sudo_users: []
 
 
 # ---
@@ -512,9 +513,9 @@ sudo_users: {}
 
 insert_webadmin_ssh_keypair: false
 
-webadmin_ssh_keypair: {}
+webadmin_ssh_keypair: []
 
-webadmin_user: {}
+webadmin_user: []
 
 
 # ---