remove unneeded migrations - Chef Jig added by install
cleanup inject rake tasks and provide reasonable default
Merge pull request #46 from VictorLowther/pull-req-master-359f04772f934645f40b525b894c9854c7e58320

https://github.com/crowbar/barclamp-chef/pull/46

Merged by devtool for cloudedge
Merge pull request #45 from cloudedge/pull-req-master-4ecee69a30d642db1628fd9f9aba5fc7820af539

https://github.com/crowbar/barclamp-chef/pull/45

Merged by devtool for VictorLowther
Fix up how we save the private key.