Install liblzma-dev as a package on all machines in AWS
Install liblzma-dev as a package on all machines in AWS

- We tried to deploy an app that depended on Nokogiri in the Gemfile,
  and compiling Nokogiri failed with errors like: `** ar: tree.o: No
  such file or directory`. The Nokogiri troubleshooting instructions
  suggest installing this package amongst others
  (http://www.nokogiri.org/tutorials/installing_nokogiri.html#ubuntu___debian),
  but this was the only one not installed on the machine Imminence was
  trying to deploy to. After installing with `apt-get`, the deploy
  succeeded, hence adding it to Puppet now.

alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet