Rotate performanceplatform-collector logs

They're currently not being rotated and are getting pretty darned big
Merge pull request #520 from alphagov/rotate-collector-logs

Rotate performanceplatform-collector logs
Monitor lumberjack app processes

If one of the lumberjack processes crashes fire a sensu alert. They are
managed with upstart so they usually come back up again. However, if
they crash coming up again too often upstart will leave them down.
Fix lint issues
Merge pull request #519 from alphagov/monitor-lumberjack-procs

Monitor lumberjack app processes
Upgrade librarian-puppet

- stay current
- use TLS when fetching things
- name dependencies appropriately
Merge pull request #521 from alphagov/feature/librarian-puppet-updates

Upgrade librarian-puppet
The published version is actually 0.13.1-1
Merge pull request #522 from alphagov/bump-sensu-version

The published version is actually 0.13.1-1
Revert "The published version is actually 0.13.1-1"
Merge pull request #523 from alphagov/revert-522-bump-sensu-version

Revert "The published version is actually 0.13.1-1"
Revert "Bump Sensu version to 0.13.1"
Merge pull request #524 from alphagov/revert-518-bump-sensu-version

Revert "Bump Sensu version to 0.13.1"
Use the correct host name in usage example
Merge pull request #525 from hippers/patch-1

Use the correct host name in usage example
Prevent puppet autoloading from any installed gem.

This has been done in govuk puppet - the reasoning as follows -

Motivation: this 'feature' causes massive slowdowns.  Disabling it
reduces the runtime on my dev vm from around 1300s to around 60s.

This 'feature' causes puppet to load extensions from any gem that happens
to be installed and provides puppet extensions.  This means that it
repeatedly searches inside every installed gem for any puppet
extensions.  Therefore puppet gets slower the more gems you have
installed.

See http://projects.puppetlabs.com/issues/7788 for details on this
'feature'.