scripts/qemu-ga-client: add module docstring

Turn that nice usage comment into a docstring.

Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 20210604155532.1499282-6-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>

scripts/qmp/qemu-ga-client

@@ -1,41 +1,42 @@
 #!/usr/bin/env python3
 
-# QEMU Guest Agent Client
-#
+"""
+QEMU Guest Agent Client
+
+Usage:
+
+Start QEMU with:
+
+# qemu [...] -chardev socket,path=/tmp/qga.sock,server,wait=off,id=qga0 \
+  -device virtio-serial \
+  -device virtserialport,chardev=qga0,name=org.qemu.guest_agent.0
+
+Run the script:
+
+$ qemu-ga-client --address=/tmp/qga.sock <command> [args...]
+
+or
+
+$ export QGA_CLIENT_ADDRESS=/tmp/qga.sock
+$ qemu-ga-client <command> [args...]
+
+For example:
+
+$ qemu-ga-client cat /etc/resolv.conf
+# Generated by NetworkManager
+nameserver 10.0.2.3
+$ qemu-ga-client fsfreeze status
+thawed
+$ qemu-ga-client fsfreeze freeze
+2 filesystems frozen
+
+See also: https://wiki.qemu.org/Features/QAPI/GuestAgent
+"""
+
 # Copyright (C) 2012 Ryota Ozaki <ozaki.ryota@gmail.com>
 #
 # This work is licensed under the terms of the GNU GPL, version 2.  See
 # the COPYING file in the top-level directory.
-#
-# Usage:
-#
-# Start QEMU with:
-#
-# # qemu [...] -chardev socket,path=/tmp/qga.sock,server=on,wait=off,id=qga0 \
-#   -device virtio-serial \
-#   -device virtserialport,chardev=qga0,name=org.qemu.guest_agent.0
-#
-# Run the script:
-#
-# $ qemu-ga-client --address=/tmp/qga.sock <command> [args...]
-#
-# or
-#
-# $ export QGA_CLIENT_ADDRESS=/tmp/qga.sock
-# $ qemu-ga-client <command> [args...]
-#
-# For example:
-#
-# $ qemu-ga-client cat /etc/resolv.conf
-# # Generated by NetworkManager
-# nameserver 10.0.2.3
-# $ qemu-ga-client fsfreeze status
-# thawed
-# $ qemu-ga-client fsfreeze freeze
-# 2 filesystems frozen
-#
-# See also: https://wiki.qemu.org/Features/QAPI/GuestAgent
-#
 
 import argparse
 import base64