.shippable.yml: new CI provider

Ostensibly Shippable offers a similar set of services as Travis.
However they are focused on Docker container based work-flows so we
can use our existing containers to run a few extra builds - in this
case a bunch of cross-compiled targets on a Debian multiarch system.
Signed-off-by: NAlex Bennée <alex.bennee@linaro.org>
Reviewed-by: NFam Zheng <famz@redhat.com>
Message-Id: <20170220105139.21581-4-alex.bennee@linaro.org>
Signed-off-by: NFam Zheng <famz@redhat.com>

.shippable.yml

+language: c
+env:
+  matrix:
+    - IMAGE=debian-armhf-cross
+      TARGET_LIST=arm-softmmu,arm-linux-user
+    - IMAGE=debian-arm64-cross
+      TARGET_LIST=aarch64-softmmu,aarch64-linux-user
+build:
+  pre_ci:
+    - make docker-image-${IMAGE}
+  pre_ci_boot:
+    image_name: qemu
+    image_tag: ${IMAGE}
+    pull: false
+    options: "-e HOME=/root"
+  ci:
+    - unset CC
+    - ./configure ${QEMU_CONFIGURE_OPTS} --target-list=${TARGET_LIST}
+    - make -j2

MAINTAINERS

@@ -1803,6 +1803,7 @@ M: Alex Bennée <alex.bennee@linaro.org>
 L: qemu-devel@nongnu.org
 S: Supported
 F: .travis.yml
+F: .shippable.yml
 
 Documentation
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