Add a new element hpdsa

This element enables creation of Ubuntu deploy ramdisk and
user images which could be used to deploy the HP Proliant
Servers with Dynamic Smart Array Controllers. Without this driver
the disk with the Dynamic Smart Array Controller is
not visible to the ramdisk.

Closes bug: #1492803

Change-Id: Ibb3b298cd379cd7333279484df6ae30e9d7f6aaa

elements/hpdsa/README.rst

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+=====
+hpdsa
+=====
+This is the hpdsa element.
+
+This element enables the 'hpdsa' driver to be included in
+the ramdisk when invoked during ramdisk/image creation.
+
+This driver is required for deploying the HP Proliant Servers
+Gen9 with Dynamic Smart Array Controllers.
+
+Note: This element supports only Ubuntu image/ramdisk to be
+updated with the hpdsa driver. It installs hp certificate
+from https://downloads.linux.hp.com/SDR/hpPublicKey2048_key1.pub.
+Since HP has released this currently only for trusty,
+It has been restricted to work only for trusty.

elements/hpdsa/package-installs.yaml

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+build-essential:
+curl:
+  phase: pre-install.d
+linux-headers-generic:
+hpdsa-dkms:

elements/hpdsa/post-install.d/95-hpdsa

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+#!/bin/bash
+
+if [ "${DIB_DEBUG_TRACE:-0}" -gt 0 ]; then
+    set -x
+fi
+set -eu
+set -o pipefail
+# Blacklist the ahci driver for hpdsa to recognize the disks.
+# It can also be done with element "modprobe-blacklist" which
+# would add the ahci driver to /etc/modprobe.d/blacklist.conf.
+# To be on safer side, blacklist the driver ahci without the
+# element "modprobe-blacklist" also.
+echo "blacklist ahci" >> /etc/modprobe.d/install-hpdsa.conf
+echo "hpdsa" >> /etc/modules

elements/hpdsa/post-install.d/98-hpdsa-post-dkms

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+#!/bin/bash
+
+if [ "${DIB_DEBUG_TRACE:-0}" -gt 0 ]; then
+    set -x
+fi
+set -eu
+set -o pipefail
+
+# This is required for HPDSA driver to be included in the
+# ramdisk of the image.
+update-initramfs -u

elements/hpdsa/pre-install.d/06-hpdsa

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+#!/bin/bash
+
+if [ "${DIB_DEBUG_TRACE:-0}" -gt 0 ]; then
+    set -x
+fi
+set -eu
+set -o pipefail
+
+# Add hpdsa repository
+echo 'deb https://downloads.linux.hp.com/SDR/repo/ubuntu-hpdsa' $DIB_RELEASE ' main' \
+    >> /etc/apt/sources.list.d/ubuntu-hpdsa.list
+
+# Add the key
+curl https://downloads.linux.hp.com/SDR/hpPublicKey2048_key1.pub | apt-key add -

elements/hpdsa/root.d/10-hpdsa-check-distro

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+#!/bin/bash
+
+if [ ${DIB_DEBUG_TRACE:-0} -gt 0 ]; then
+    set -x
+fi
+set -eu
+set -o pipefail
+
+if [ 'ubuntu' != $DISTRO_NAME ] ; then
+    echo "Only ubuntu is supported for hpdsa driver. The DISTRO is set to $DISTRO_NAME"
+    exit 1
+fi
+
+if [ 'trusty' != $DIB_RELEASE ] ; then
+    echo "Only trusty is supported for hpdsa driver. The DIB_RELEASE is set to $DIB_RELEASE"
+    exit 1
+fi