Rename .yaml to .yml

docker-compose and other utilities use the .yml extension.
For consistency rename all .yaml to .yml

Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>

test/test.yml

@@ -0,0 +1,21 @@
+kernel:
+  image: "mobylinux/kernel:4.9.x"
+  cmdline: "console=ttyS0"
+init: "mobylinux/init:a5d75555065bd0b4d41777dda00e5154ae0785e6"
+system:
+  - name: binfmt
+    image: "mobylinux/binfmt:bdb754f25a5d851b4f5f8d185a43dfcbb3c22d01"
+    binds:
+     - /proc/sys/fs/binfmt_misc:/binfmt_misc
+    read_only: true
+    command: [/usr/bin/binfmt, -dir, /etc/binfmt.d/, -mount, /binfmt_misc]
+  - name: check
+    image: "mobylinux/check:c9e41ab96b3ea6a3ced97634751e20d12a5bf52f"
+    pid: host
+    capabilities:
+     - CAP_SYS_BOOT
+    read_only: true
+outputs:
+  - format: kernel+initrd
+  - format: iso-bios
+  - format: iso-efi