Write depth buffer & view to registered RenderBuffer

[dorbie]

depthStencilTextures and depthStencilViews vectors seem to be deprecated but leave for now

[russell-taylor]

I guess it makes sense to go ahead and tell the RenderManager about the depth/stencil buffer but if we're doing that then it seems like it would also make sense to change the call to RenderView to get that information back out of the renderBuffers structure rather than continuing to send it directly.

There is at least one other example that uses this same approach that we could also change to work this way.

[russell-taylor]

I checked, and it does indeed work to pull the view from the RenderInfo, so if you add that I'll go ahead and approve the request. We can then open an issue to change the other files to match.