[WIP] Add Plan Wizard: Split resources into src, dst and replication

[gildub]

WIP - Please DO NOT MERGE.

Closes #724
Closes #765

[gildub]

@vconzola, please let me know what you think.

[vconzola]

@gildub I didn't know you were working on this issue right now. Your work will conflict directly with the UXD changes @mturley is making to the wizard. Can we hold off on this for a bit? I need to re-think how the steps should be organized. I'd also like to make these changes at the same time we're addressing changes to be able to scale the UI to handle large numbers of namespaces #426.

[mturley]

@vconzola your other reasons to hold off are valid, and @gildub we should communicate better so we don't step on each other's toes, but luckily I think this would not conflict with the stuff I'm working on for the PV and Storage Class wizard steps, since we're working in different files.

[eriknelson]

I'd also like to make these changes at the same time we're addressing changes to be able to scale the UI to handle large numbers of namespaces #426.

@vconzola It's unlikely we're going to touch #426 until 1.3, certainly it's post-1.2.0.

Are we sure we want to wait until we're moving into June to split out this screen?

[vconzola]

@eriknelson Yes, I'd prefer to wait. As implement it would add two steps to the wizard, which with the hooks would mean we'd have an 8 step wizard and three of the first four steps would have only a single input field. I'd rather take some time and understand what fields can be combined in a step in way that makes sense from both a UX and controller standpoint. Also, the wizard works as is and we don't need to break the steps out until we tackle #426, so I think we should do them together.

[eriknelson]

@vconzola ACK, makes sense.

@gildub Going to close this PR; I don't think there's going to be a lot here that can be reused and we're going to take a step back from a design standpoint and revisit this in a couple months.