Add DIB MySQL element

Change-Id: If6a3bf8bc2c00f90efca025df6e3c0d6be0635b0

elements/mysql/README.md

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+This element setups basic components of MySQL on Ubuntu and Fedora.
+It is light version of original MySQL element (https://github.com/openstack/tripleo-image-elements/tree/master/elements/mysql).

elements/mysql/install.d/10-mysql

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+#!/bin/sh
+set -e
+set -o xtrace
+if [ $(lsb_release -is) = 'Fedora' ]; then
+  install-packages community-mysql community-mysql-libs community-mysql-server mysql-connector-java
+  mkdir -p /etc/mysql/conf.d
+elif [ $(lsb_release -is) = 'Ubuntu' ]; then
+  install-packages mysql-server-5.5 mysql-client-5.5 libmysql-java
+else
+  echo "Unknown distribution"
+  exit 1
+fi
+rm -rf /var/lib/mysql/ib_logfile*

elements/mysql/install.d/99-disable-mysql-on-boot

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+#!/bin/bash
+
+# Disable startup MySQL on boot in Ubuntu
+# Service mysqld dones't start on boot in Fedora
+
+if [ $(lsb_release -is) = 'Ubuntu' ]; then
+  if [ -e "/etc/init/mysql.conf" ]; then
+    sed -i "s/start on runlevel \[.*\]/start on never runlevel [2345]/g" /etc/init/mysql.conf
+  else
+    update-rc.d -f mysql remove
+  fi
+fi
+
+# Script for starting mysql
+
+install -D -g root -o root -m 0755 $(dirname $0)/start-mysql.sh /opt/start-mysql.sh

elements/mysql/install.d/start-mysql.sh

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+#!/bin/bash
+if [ $(lsb_release -is) = 'Ubuntu' ]; then
+  sudo service mysql start
+elif [ $(lsb_release -is) = 'Fedora' ]; then
+  sudo service mysqld start
+fi