Commit f7a24b2ea8 ("lib/qemu.c: Use machine type none when inspecting
QMP properties") changed the number of command line parameters used
before the '-qmp stdio' option when libguestfs queries qemu features.
This broke some tests which rely on the exact order of parameters.
Fixes: commit f7a24b2ea8
Updates: commit 5da8102f5f
45d0e66d02