tests: cleanup test directory

- add a `pkg` directory for packages
- add a `cases` directory for yml files

Signed-off-by: Dave Tucker <dt@docker.com>

test/pkg/ltp/.gitignore

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+/hash
+/opt

test/pkg/ltp/Dockerfile.build

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+FROM debian:jessie
+
+ARG LTP_VERSION
+
+ENV LTP_SOURCE=https://github.com/linux-test-project/ltp/releases/download/${LTP_VERSION}/ltp-full-${LTP_VERSION}.tar.xz
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN apt-get update && \
+    apt-get install -y curl xz-utils make gcc flex bison automake autoconf
+
+RUN curl -fsSL -o ltp-full-${LTP_VERSION}.tar.xz ${LTP_SOURCE}
+
+RUN cat ltp-full-${LTP_VERSION}.tar.xz | tar --absolute-names -xJ &&  mv /ltp-full-${LTP_VERSION} /ltp
+
+RUN cd /ltp \
+    && make autotools \
+    && ./configure \
+    && make -j "$(getconf _NPROCESSORS_ONLN)" all \
+    && make install

test/pkg/ltp/Dockerfile.pkg

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+FROM debian:jessie-slim@sha256:fb22c1cef74071a6cd0145c1f91ca85ba9bd3f8b4d6db8560fe69eb36a175ca3
+ADD . /
+WORKDIR /opt/ltp
+ENTRYPOINT ["/bin/sh", "/check.sh"]

test/pkg/ltp/Makefile

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+LTP_VERSION=20170116
+
+all: ltp.tar push
+
+# Build LTP and get the result as a tarball
+DEPS=Dockerfile.build Makefile
+ltp.tag: $(DEPS)
+	BUILD=$$(docker build -f $< -q . --build-arg LTP_VERSION=$(LTP_VERSION)) && [ -n "$$BUILD" ] && echo "Built $$BUILD" && echo "$$BUILD" > $@
+
+ltp.tar: ltp.tag
+	docker run --rm --net=none --log-driver=none $(shell cat ltp.tag) tar cf - opt/ltp  > $@
+
+SHASUM=alpine:3.5
+IMAGE=test-ltp-$(LTP_VERSION)
+
+# Note: We do not compute the hash from all the dependencies here
+# because the ltp binaries will change everytime we build. Ideally, we
+# would calculate the hash from the source and the apt-get cache, but
+# it's not that critical.
+hash: Dockerfile.pkg ltp.tar check.sh $(DEPS)
+	tar xf ltp.tar
+	tar cf - Dockerfile.pkg opt check.sh | docker build --no-cache -t $(IMAGE):build -f Dockerfile.pkg -
+	cat Dockerfile.pkg check.sh $(DEPS) | DOCKER_CONTENT_TRUST=1 docker run --rm -i $(SHASUM) sha1sum | sed 's/ .*//' > $@
+
+push: hash
+	docker pull linuxkit/$(IMAGE):$(shell cat hash) || \
+		(docker tag $(IMAGE):build linuxkit/$(IMAGE):$(shell cat hash) && \
+		docker push linuxkit/$(IMAGE):$(shell cat hash))
+	docker rmi $(IMAGE):build
+	rm -f hash
+
+tag: hash
+	docker pull linuxkit/$(IMAGE):$(shell cat hash) || \
+		docker tag $(IMAGE):build linuxkit/$(IMAGE):$(shell cat hash)
+	docker rmi $(IMAGE):build
+	rm -f hash
+
+.PHONY: clean
+clean:
+	rm -rf opt ltp.tar ltp.tag hash
+
+.DELETE_ON_ERROR:

test/pkg/ltp/README.md

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+This directory creates a container which runs the Linux Test Project test code

test/pkg/ltp/check.sh

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+#!/bin/sh
+
+sh runltplite.sh -p -l /ltp.log
+cat /ltp.log
+
+baseline="$(cat /etc/ltp/baseline)"
+failures="$( grep "Total Failures" /ltp.log | awk '{print $3}')"
+
+if [ $((failures <= baseline)) -ne 0 ]
+then
+	printf "LTP test suite PASSED\n"
+else
+	printf "LTP test suite FAILED\n"
+	exit 1
+fi