Merge pull request #664 from devinsolutions/install-coreos

Add new type __install_coreos

cdist/conf/type/__install_coreos/gencode-remote

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+#!/bin/sh -e
+
+device=$(cat "${__object:?}/parameter/device")
+ignition=$(cat "${__object}/parameter/ignition")
+
+cat <<EOF
+ignition_file="\$(mktemp /tmp/cdist.XXXXXXXXXX)"
+
+base64 -d > "\${ignition_file}" << eof
+$(base64 "${ignition}")
+eof
+
+coreos-install -d "${device}" \
+	\$(if [ -s "\${ignition_file}" ]; then
+		printf -- "-i \${ignition_file}\n"
+	fi)
+
+rm "\${ignition_file}"
+EOF

cdist/conf/type/__install_coreos/man.rst

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+cdist-type__install_coreos(7)
+=============================
+
+NAME
+----
+
+cdist-type__install_coreos - Install CoreOS
+
+DESCRIPTION
+-----------
+
+This type installs CoreOS to a given device using coreos-install_, which is
+present in CoreOS ISO by default.
+
+.. _coreos-install: https://raw.githubusercontent.com/coreos/init/master/bin/coreos-install
+
+REQUIRED PARAMETERS
+-------------------
+
+device
+    A device CoreOS will be installed to.
+
+OPTIONAL PARAMETERS
+-------------------
+
+ignition
+    Path to ignition config.
+
+EXAMPLES
+--------
+
+.. code-block:: sh
+
+    __install_coreos \
+        --device /dev/sda \
+        --ignition ignition.json
+
+
+AUTHORS
+-------
+
+Ľubomír Kučera <lubomir.kucera.jr at gmail.com>
+
+COPYING
+-------
+
+Copyright \(C) 2018 Ľubomír Kučera. You can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation, either version 3 of the
+License, or (at your option) any later version.

cdist/conf/type/__install_coreos/parameter/optional

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+ignition

cdist/conf/type/__install_coreos/parameter/required

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+device