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Merge pull request #689 from cloudedge/pull-req-master-17e9e52fd7146eaff3ce9d6bdb0771008f8e2e9f

https://github.com/crowbar/barclamp-crowbar/pull/689

Merged by devtool for VictorLowther
Add ip helper to ease working woth IP addresses.
Automatically allocate an IP address for a node.
Add a noop jig for roles that just hold config data.
Add cohorts to roles as well
Fix sysdata.
Merge remote-tracking branch 'crowbar/master'
index tree
fixed various things
fixed schema to use parent_id
trivial formatting
minor formatting
cleanup
oops
maybe too early to delete that
Merge pull request #692 from VictorLowther/pull-req-master-402e9ce91111702c1f810a6a19545ee4d489a3f9

CB 2.0: Make the network barclamp really work, and make all the recipes really Chef11 compliant. [1/5]
formalize annealer screen and API calls
add cohort