MAINTAINERS: Add more guest-agent related files to the corresponding …

…section

contrib/systemd/qemu-guest-agent.service, tests/data/test-qga-config
and tests/data/test-qga-os-release belong to the guest agent, so make
sure that these files are covered here, too.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com>
Message-ID: <20231107101811.14189-1-thuth@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

MAINTAINERS

@@ -3145,10 +3145,11 @@ M: Michael Roth <michael.roth@amd.com>
 M: Konstantin Kostiuk <kkostiuk@redhat.com>
 S: Maintained
 F: qga/
+F: contrib/systemd/qemu-guest-agent.service
 F: docs/interop/qemu-ga.rst
 F: docs/interop/qemu-ga-ref.rst
 F: scripts/qemu-guest-agent/
-F: tests/unit/test-qga.c
+F: tests/*/test-qga*
 T: git https://github.com/mdroth/qemu.git qga
 
 QEMU Guest Agent Win32