Add tools task
Add tools task

This task installs some packages on the node:
- screen,
- tmux,
- man,
- htop,
- tcpdump,
- strace,
- fuel-misc

Where these ones are direcly useful:
- fuel-misc brings the fuel-logrotate script which ensure log rotations
  (daily by cron)
- atop runs in background to collect system stats

And also remove cloud-init package.

Change-Id: I6bb09f8374e0d83fee1ef10c00264aa17b33933c

stackforge/fuel-plugin-lma-infrastructure-alerting,stackforge/fuel-plugin-lma-infrastructure-alerting,stackforge/fuel-plugin-lma-infrastructure-alerting