Merge pull request #229 from rperryman/pull-req-master-0b15c3380f90d988c12b45ee9d3a3c8a7746449c

Update to support the OS_SDN network [1/1]
v6prefix auto generation and tests
tweaks based on review feedback, checked with tests
Merge pull request #230 from cloudedge/pull-req-master-7b2595345449549a947599bce19b7b2359708d68

https://github.com/crowbar/barclamp-network/pull/230

Merged by devtool for VictorLowther
Fix up auto v6prefix handling to work properly in prodction.
Expose the v6prefix attribute
Merge pull request #232 from VictorLowther/pull-req-master-b270781498ad8e7eff7e1b087b76903f225e98ee

https://github.com/crowbar/barclamp-network/pull/232

Merged by devtool for cloudedge
add network specific attribs
fix typo in names
Merge pull request #231 from cloudedge/pull-req-master-ee99a890a1474d496e875d6d9a09f7959a992687

https://github.com/crowbar/barclamp-network/pull/231

Merged by devtool for VictorLowther
Fix on_proposed to handle networks that don't have ranges.

It is permissible to declare networks without ranges if you just want
IPv6 address auto allocation to handle assigning addresses.
Merge pull request #233 from VictorLowther/pull-req-master-813ddc976a035cc6cb8e2f84507fac132aba7c83

https://github.com/crowbar/barclamp-network/pull/233

Merged by devtool for cloudedge
limit deployments to pulldown instead of text box
Merge pull request #234 from cloudedge/pull-req-master-97d4b4b3e4a1c06236531463f23538e8d5e0a367

https://github.com/crowbar/barclamp-network/pull/234

Merged by devtool for cloudsleuth
Update and rename README.txt to README.md
Delete network.yml