* Add support for autoupdates

only Debian-based systems are supported for now
(through unattended-upgrades package)

* Fix test on system.autoupdates.pkgs

Change-Id: I6ba3d72307805341829fe0f6919e326f3698e833

"names" makes a separate call to the package management frontend to
install each package, whereas "pkgs" makes just a single call so that it
improves performance.

Enable SR-IOV support on server.

Change-Id: I7dabe340abd398cc0422698112cbdd81804446b7
Epic: PROD-8956

Grub hugepages configuration and mount point action.

Change-Id: I49b26871c325b95a7d3f264892a9e997b58765bc
Epic: PROD-8959

Change-Id: I48f912c9d966c99d78cd2e89b605a2d016afe18b

Before adding new records to /etc/hosts, remove all hostnames
that are managed by the model but have different addresses
than provided in the model.

Change-Id: Idf5a30429497c33027e6ba973e684ba0443a1edf

This state allows to configure loopback device(s). This isn't meant to
be used in production but offers a cheap way to test Cinder with LVM
volumes.

Parameter purge_hosts will enforce whole /etc/hosts file, removing entries
that are not defined in model except defaults for both IPv4 and IPv6 localhost
and hostname + fqdn.

It's good to use this option if you want to ensure /etc/hosts is always in a
clean state however it's not enabled by default for safety.

Change-Id: Ieb219b2dd494d5a66ecc52a2ec00dd5157ee2b7a

This reverts commit a63f4053f3.

The support for collecting syslog is going to be moved to the rsyslog
formula.

This commit adds more built-in alarms to the Linux formula.

The alerting property can be one of 'disabled', 'enabled' or
'enabled_with_notification'

Currently Syslog doesn't log the priority ('<PRI>').

This is to comply to a comment from @cznewt in
https://github.com/tcpcloud/salt-formula-heka/pull/24.

This patch replaces the "interface" collectd plugin by the "netlink" one. The
"netlink" plugin provides the same metrics as "interface" but plus other
metrics such as the number of dropped packets.

This is now handled by the Heka formula the same way for all the Heka sandbox
decoders. https://github.com/tcpcloud/salt-formula-heka/pull/20

This filter should be configured by the heka formula itself.

There is an error in salt doc. Hashing-alghoritm is correct, 90bbf8dc4f/salt/modules/debian_ip.py (L1045)