run: add -nodefaults

Adding pci-test to arm allowed us to see that a virtio-net-pci
device was getting added to our machine by default. Unit tests
should configure the most minimal machines they can, only adding
devices necessary for the tests. Let's add -nodefaults to all
the run scripts.

I tested all arches (powerpc and arm on tcg). There were no
unexpected changes.

Signed-off-by: Andrew Jones <drjones@redhat.com>
Acked-by: Thomas Huth <thuth@redhat.com>  [powerpc]
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
diff --git a/arm/run b/arm/run
index 1ee6231..f1b04af 100755
--- a/arm/run
+++ b/arm/run
@@ -73,7 +73,7 @@
 fi
 
 M+=",accel=$ACCEL"
-command="$qemu $M -cpu $processor $chr_testdev $pci_testdev"
+command="$qemu -nodefaults $M -cpu $processor $chr_testdev $pci_testdev"
 command+=" -display none -serial stdio -kernel"
 command="$(timeout_cmd) $command"
 echo $command "$@"
diff --git a/powerpc/run b/powerpc/run
index 14988a7..afdd487 100755
--- a/powerpc/run
+++ b/powerpc/run
@@ -43,7 +43,7 @@
 
 M='-machine pseries'
 M+=",accel=$ACCEL"
-command="$qemu $M -bios $FIRMWARE"
+command="$qemu -nodefaults $M -bios $FIRMWARE"
 command+=" -display none -serial stdio -kernel"
 command="$(timeout_cmd) $command"
 echo $command "$@"
diff --git a/x86/run b/x86/run
index 8c8fe7d..10a6e6d 100755
--- a/x86/run
+++ b/x86/run
@@ -42,7 +42,7 @@
 	pc_testdev="-device testdev,chardev=testlog -chardev file,id=testlog,path=msr.out"
 fi
 
-command="${qemu} -enable-kvm $pc_testdev -vnc none -serial stdio $pci_testdev $hyperv_testdev -kernel"
+command="${qemu} -nodefaults -enable-kvm $pc_testdev -vnc none -serial stdio $pci_testdev $hyperv_testdev -kernel"
 command="$(timeout_cmd) $command"
 echo ${command} "$@"