Update moby tool and qemu fixes

- no longer uses several of the `mkimage-*` tools in favour of dogfooding
with `linuxkit` and using the `mkimage` package.
- fix the qemu docker container fallbacks to work better when multiple
paths are used for disks and the image.

Signed-off-by: Justin Cormack <justin.cormack@docker.com>

test/cases/000_build/000_outputs/test.sh

@@ -17,13 +17,14 @@ clean_up() {
 
 trap clean_up EXIT
 
-moby build -output tar,kernel+initrd,iso-bios,iso-efi,img-gz,qcow2,vmdk -name "${NAME}" test.yml
+moby build -disable-content-trust -output tar,kernel+initrd,iso-bios,iso-efi,img,img-gz,qcow2,vmdk -name "${NAME}" test.yml
 [ -f "${NAME}.tar" ] || exit 1
 [ -f "${NAME}-kernel" ] || exit 1
 [ -f "${NAME}-initrd.img" ] || exit 1
 [ -f "${NAME}-cmdline" ] || exit 1
 [ -f "${NAME}.iso" ] || exit 1
 [ -f "${NAME}-efi.iso" ] || exit 1
+[ -f "${NAME}.img" ] || exit 1
 [ -f "${NAME}.img.gz" ] || exit 1
 [ -f "${NAME}.qcow2" ] || exit 1
 # VHD currently requires a lot of memory, disable for now

test/cases/010_platforms/000_qemu/040_run_raw/test.sh

@@ -0,0 +1,23 @@
+#!/bin/sh
+# SUMMARY: Check that raw image boots in qemu
+# LABELS:
+
+set -e
+
+# Source libraries. Uncomment if needed/defined
+#. "${RT_LIB}"
+. "${RT_PROJECT_ROOT}/_lib/lib.sh"
+
+NAME=qemu-raw
+
+clean_up() {
+	# remove any files, containers, images etc
+	rm -rf ${NAME}* || true
+}
+
+trap clean_up EXIT
+
+moby build -output img -name "${NAME}" test.yml
+[ -f "${NAME}.img" ] || exit 1
+linuxkit run qemu "${NAME}.img" | grep -q "Welcome to LinuxKit"
+exit 0

test/cases/010_platforms/000_qemu/040_run_raw/test.yml

@@ -0,0 +1,14 @@
+kernel:
+  image: "linuxkit/kernel:4.9.x"
+  cmdline: "console=ttyS0 console=tty0 page_poison=1"
+init:
+  - linuxkit/init:1b8a7e394d2ec2f1fdb4d67645829d1b5bdca037
+  - linuxkit/runc:3a4e6cbf15470f62501b019b55e1caac5ee7689f
+  - linuxkit/containerd:deaf5bf838bf7f131c2287ecff3ed9835b0497e2
+onboot:
+  - name: poweroff
+    image: "linuxkit/poweroff:7404cf2295df89ccfa2dda41997a28307a90cf28"
+    command: ["/bin/sh", "/poweroff.sh", "10"]
+trust:
+  org:
+    - linuxkit