Pull in features by Appscode/Pharmer

[displague]

master...appscode:master includes a number of improvements,

• support for NodeBalancers
• support for Volumes
• support for StackScripts
• fixes for RDNS
• fixes for Kernels

These changes should be merged into this repo if the rest of their directions are amicable with this project (they may have added things specific to their use-case).

cc: @tamalsaha @sanjid133

[tamalsaha]

We are cool with that. We had not upstreamed this because we are short on time. If you want to take these and upstream them , you have our 👍 .

[tamalsaha]

Personally I would like to see v3 client maintained under Linode's own github org. That ensures that future changes can be discussed, contributed, timely reviewed etc. So, if you fork in Linode's org and mention us in the acknowledgment that will be even better.