Update lorry-controller for branch sam/proxy-with-no-usernam
chef: Add morphs generated by import tool
chef: Manually add morphs for non-standard Gem components
chef: Add auto-generated Chef stratum
chef: Add missing C library

This must be added manually, because it's not described in the RubyGems metadata.
chef: Add system morph
chef: Manually fix Erubis build

Seems to use an obsolete build system called 'rook', which I cannot get
to work.
chef: Add missing build dependency for ffi-yajl
chef: Fix libyajl2 build

Needs to be told to use the system-wide version, not its own bundled copy.
chef: Use ipaddress 'master' branch to fix Gem build

The 0.8.0 release had a bad Gemspec file committed, master seems
to contain several useful fixes.
chef: Fix build of signed Gems, by doing an unsigned build
remove x-fields from morphs
Add NTP import (from Codethink-internal service)
Switch to baserock branch of chef
Update Chef gem name to suit latest source
Change upstream ref for chef to baserock-package-provider-10
Revert "Update Chef gem name to suit latest source"

This reverts commit 669c8c14a72197c91f2a65872231519747862480.
Add chef strata to ceph-service and change chef upstream to sam's branch