Water boundary lines should indicate intermittent property (playas)

[nvkelso]

• What did you see?

Sevier Lake in Utah is marked intermittent in OSM, and in our vector tiles the polygon shows as intermittent, but the related boundary line feature is missing that property.

Including this property would make it possible to style the outer part of the water body dashed. We could also consider changing the feature type to kind: playa, too. We had earlier skipped considering which OSM properties would amount to the Natural Earth kind: playa, but intermittent seems to do the trick, sometimes? The boundary intermittent change should be made in any case.

• What did you expect to see?

Water boundary lines should include intermittent property.

I think this is controlled here:

• vector-datasource/queries.yaml

  Lines 267 to 275 in e324c7d

  	params:
  	base_layer: water
  	start_zoom: 9
  	prop_transform:
  	kind: true
  	id: true
  	source: true
  	boundary: [true]
  	area: true

• What map location are you having problems with?

http://tangrams.github.io/walkabout-style/#10/38.8397/-113.1606

• Screenshot?

[nvkelso]

The intermittent: true change is verified.

Looks like we deferred if it should also be kind: playa.

[nvkelso]

I think it's fine to not make playa for now. Here's a more interesting example which also includes wetland and mud tags around the "lake". So it's useful to show it as "water" versus "mud".