vtest: add support for custom socket path

By default vtest_server uses a hard coded socket path. In certain use
cases it is helpful to locate the socket elsewhere.

Closes: https://gitlab.freedesktop.org/virgl/virglrenderer/-/issues/256

Signed-off-by: Simon Fels <simon.fels@canonical.com>
Reviewed-by: Gert Wollny <gert.wollny@collabora.com>
Part-of: <https://gitlab.freedesktop.org/virgl/virglrenderer/-/merge_requests/941>
1 file changed