Prefer 'on' | 'off' over 'yes' | 'no' for bool options

Update some docs and test cases to use 'on' | 'off' as the preferred
value for bool options.

Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>

docs/system/vnc-security.rst

@@ -65,7 +65,7 @@ encrypted session.
 .. parsed-literal::
 
    |qemu_system| [...OPTIONS...] \
-     -object tls-creds-x509,id=tls0,dir=/etc/pki/qemu,endpoint=server,verify-peer=no \
+     -object tls-creds-x509,id=tls0,dir=/etc/pki/qemu,endpoint=server,verify-peer=off \
      -vnc :1,tls-creds=tls0 -monitor stdio
 
 In the above example ``/etc/pki/qemu`` should contain at least three
@@ -84,12 +84,12 @@ connecting. The server will request that the client provide a
 certificate, which it will then validate against the CA certificate.
 This is a good choice if deploying in an environment with a private
 internal certificate authority. It uses the same syntax as previously,
-but with ``verify-peer`` set to ``yes`` instead.
+but with ``verify-peer`` set to ``on`` instead.
 
 .. parsed-literal::
 
    |qemu_system| [...OPTIONS...] \
-     -object tls-creds-x509,id=tls0,dir=/etc/pki/qemu,endpoint=server,verify-peer=yes \
+     -object tls-creds-x509,id=tls0,dir=/etc/pki/qemu,endpoint=server,verify-peer=on \
      -vnc :1,tls-creds=tls0 -monitor stdio
 
 .. _vnc_005fsec_005fcertificate_005fpw:
@@ -103,7 +103,7 @@ authentication to provide two layers of authentication for clients.
 .. parsed-literal::
 
    |qemu_system| [...OPTIONS...] \
-     -object tls-creds-x509,id=tls0,dir=/etc/pki/qemu,endpoint=server,verify-peer=yes \
+     -object tls-creds-x509,id=tls0,dir=/etc/pki/qemu,endpoint=server,verify-peer=on \
      -vnc :1,tls-creds=tls0,password -monitor stdio
    (qemu) change vnc password
    Password: ********
@@ -145,7 +145,7 @@ x509 options:
 .. parsed-literal::
 
    |qemu_system| [...OPTIONS...] \
-     -object tls-creds-x509,id=tls0,dir=/etc/pki/qemu,endpoint=server,verify-peer=yes \
+     -object tls-creds-x509,id=tls0,dir=/etc/pki/qemu,endpoint=server,verify-peer=on \
      -vnc :1,tls-creds=tls0,sasl -monitor stdio
 
 .. _vnc_005fsetup_005fsasl:

include/authz/listfile.h

@@ -73,7 +73,7 @@ OBJECT_DECLARE_SIMPLE_TYPE(QAuthZListFile,
  * The object can be created on the command line using
  *
  *   -object authz-list-file,id=authz0,\
- *           filename=/etc/qemu/myvm-vnc.acl,refresh=yes
+ *           filename=/etc/qemu/myvm-vnc.acl,refresh=on
  *
  */
 struct QAuthZListFile {

qemu-options.hx

@@ -5027,7 +5027,7 @@ SRST
         Note the use of quotes due to the x509 distinguished name
         containing whitespace, and escaping of ','.
 
-    ``-object authz-listfile,id=id,filename=path,refresh=yes|no``
+    ``-object authz-listfile,id=id,filename=path,refresh=on|off``
         Create an authorization object that will control access to
         network services.
 
@@ -5072,7 +5072,7 @@ SRST
 
              # |qemu_system| \\
                  ... \\
-                 -object authz-simple,id=auth0,filename=/etc/qemu/vnc-sasl.acl,refresh=yes \\
+                 -object authz-simple,id=auth0,filename=/etc/qemu/vnc-sasl.acl,refresh=on \\
                  ...
 
     ``-object authz-pam,id=id,service=string``

tests/qemu-iotests/233

@@ -84,7 +84,7 @@ echo
 echo "== check plain client to TLS server fails =="
 
 nbd_server_start_tcp_socket \
-    --object tls-creds-x509,dir=${tls_dir}/server1,endpoint=server,id=tls0,verify-peer=yes \
+    --object tls-creds-x509,dir=${tls_dir}/server1,endpoint=server,id=tls0,verify-peer=on \
     --tls-creds tls0 \
     -f $IMGFMT "$TEST_IMG" 2>> "$TEST_DIR/server.log"
 
@@ -129,7 +129,7 @@ echo "== check TLS with authorization =="
 nbd_server_stop
 
 nbd_server_start_tcp_socket \
-    --object tls-creds-x509,dir=${tls_dir}/server1,endpoint=server,id=tls0,verify-peer=yes \
+    --object tls-creds-x509,dir=${tls_dir}/server1,endpoint=server,id=tls0,verify-peer=on \
     --object "authz-simple,id=authz0,identity=CN=localhost,, \
       O=Cthulu Dark Lord Enterprises client1,,L=R'lyeh,,C=South Pacific" \
     --tls-authz authz0 \