Unbreak initial chef-client run

Commit 0308647 and the following commits
caused a crash during the initial chef-client (during crowbar installation) run
because node[:dns][:zones] was referenced before it's acutally initialized.

Merge pull request crowbar#103 from vuntz/bind9-deps

Add dependencies in bind9 metadata

Merge pull request crowbar#93 from vuntz/vip-hostname

Fix hostnames for admin virtual IPs

Merge pull request crowbar#82 from tboerger/feature/add-records

Added functionality to add A records with the UI to the main zone file

Merge pull request crowbar#74 from mapleoin/new-webui

Supergut and totally unsmokeable ATM. Even if it would break, we would end up in RAW mode again, so no harm possible :-)

Merge pull request crowbar#68 from saschpe/release/pebbles/master-fix…

…up-forward-only-ubuntu

Set forward-only only on SUSE

Merge pull request crowbar#52 from ociuhandu/pull-req-release-pebbles…

…-master-58a2078e8676eb14d4439f36e1ad3e1385f0a21b

crowbar#52

Merged by devtool for VictorLowther

Merge pull request crowbar#45 from rhafer/release/pebbles/master

crowbar#45

Merged by devtool for VictorLowther

Add bind-libs as an explicit dependency for redhat to ensure proper u…

…pdates.

Add bind-libs as an explicit dependency for redhat to ensure proper u…

…pdates.