containers: introduce kubernetes orchestration

Introducing the kubernets components for container orchestration.

The packaging introduced here creates the framework for more
advanced kubernetes configurations. By itself, it doesn't do much
but it makes the components available to be configured and deployed
as master/worker nodes.

It integrates with the previously introduced cni and cri-o
components available in meta-virt.

Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>

recipes-containers/kubernetes/kubernetes_git.bb

@@ -0,0 +1,98 @@
+HOMEPAGE = "git://github.com/kubernetes/kubernetes"
+SUMMARY = "Production-Grade Container Scheduling and Management"
+DESCRIPTION = "Kubernetes is an open source system for managing containerized \
+applications across multiple hosts, providing basic mechanisms for deployment, \
+maintenance, and scaling of applications. \
+"
+
+SRCREV_kubernetes = "4b839465f84e7faf876c51703aaf49b37fd10d9c"
+SRC_URI = "git://github.com/kubernetes/kubernetes.git;nobranch=1;name=kubernetes \
+          "
+
+DEPENDS += "rsync-native \
+            coreutils-native \
+           "
+
+PACKAGES =+ "kubeadm"
+PACKAGES =+ "kubectl"
+PACKAGES =+ "kubelet"
+
+ALLOW_EMPTY_${PN} = "1"
+
+# Note: we are explicitly *not* adding docker to the rdepends, since we allow
+#       backends like cri-o to be used.
+RDEPENDS_${PN} += "kubeadm \
+                   kubectl \
+                   kubelet \
+                   cni"
+
+RDEPENDS_kubeadm = "kubelet kubectl"
+RDEPENDS_kubelet = "iptables socat util-linux ethtool iproute2 ebtables"
+
+LICENSE = "Apache-2.0"
+LIC_FILES_CHKSUM = "file://src/import/LICENSE;md5=3b83ef96387f14655fc854ddc3c6bd57"
+
+GO_IMPORT = "import"
+
+PV = "1.9.0-alpha.1+git${SRCREV_kubernetes}"
+
+inherit systemd
+inherit go
+inherit goarch
+
+do_compile() {
+	export GOARCH="${TARGET_GOARCH}"
+	export GOROOT="${STAGING_LIBDIR_NATIVE}/${TARGET_SYS}/go"
+	export GOPATH="${S}/src/import:${S}/src/import/vendor"
+
+	# Pass the needed cflags/ldflags so that cgo
+	# can find the needed headers files and libraries
+	export CGO_ENABLED="1"
+	export CFLAGS=""
+	export LDFLAGS=""
+	export CGO_CFLAGS="${BUILDSDK_CFLAGS} --sysroot=${STAGING_DIR_TARGET}"
+	export CGO_LDFLAGS="${BUILDSDK_LDFLAGS} --sysroot=${STAGING_DIR_TARGET}"
+
+	# link fixups for compilation
+	rm -f ${S}/src/import/vendor/src
+	ln -sf ./ ${S}/src/import/vendor/src
+
+	export GOPATH="${S}/src/import/.gopath:${S}/src/import/vendor:${STAGING_DIR_TARGET}/${prefix}/local/go"
+	export GOROOT="${STAGING_DIR_NATIVE}/${nonarch_libdir}/${HOST_SYS}/go"
+
+	# Pass the needed cflags/ldflags so that cgo
+	# can find the needed headers files and libraries
+	export CGO_ENABLED="1"
+	export CGO_CFLAGS="${CFLAGS} --sysroot=${STAGING_DIR_TARGET}"
+	export CGO_LDFLAGS="${LDFLAGS} --sysroot=${STAGING_DIR_TARGET}"
+
+	cd ${S}/src/import
+	# to limit what is built, use 'WHAT', i.e. make WHAT=cmd/kubelet
+	make all
+}
+
+do_install() {
+    install -d ${D}${bindir}
+    install -d ${D}${systemd_unitdir}/system/
+    install -d ${D}${systemd_unitdir}/system/kubelet.service.d/
+
+    install -d ${sysconfdir}/kubernetes/manifests/
+
+    install -m 755 -D ${S}/src/import/_output/bin/kube* ${D}/${bindir}
+
+    install -m 0644 ${S}/src/import/build/debs/kubelet.service  ${D}${systemd_unitdir}/system/
+    install -m 0644 ${S}/src/import/build/debs/10-kubeadm.conf  ${D}${systemd_unitdir}/system/kubelet.service.d/
+}
+
+SYSTEMD_PACKAGES = "${@bb.utils.contains('DISTRO_FEATURES','systemd','kubelet','',d)}"
+SYSTEMD_SERVICE_kubelet = "${@bb.utils.contains('DISTRO_FEATURES','systemd','kubelet.service','',d)}"
+SYSTEMD_AUTO_ENABLE_kubelet = "enable"
+
+FILES_kubeadm = "${bindir}/kubeadm ${systemd_unitdir}/system/kubelet.service.d/*"
+FILES_kubectl = "${bindir}/kubectl"
+FILES_kubelet = "${bindir}/kubelet ${systemd_unitdir}/system/kubelet.service ${sysconfdir}/kubernetes/manifests/"
+
+INHIBIT_PACKAGE_STRIP = "1"
+INSANE_SKIP_${PN} += "ldflags already-stripped"
+
+deltask compile_ptest_base