Generate missing years for Landsat basemaps

[benlaken]

Currently we only have a few years of landsat basemaps generated. You will need to add the missing years.

This task will, at minimum involve running scripts on Google Earth Engine, adding data to our Google Cloud storage buckets (sharing that data with the WRI account), and editing the python microservice (and making changes in the WRI service too, so they can have the additional years of data).

[benlaken]

Check https://github.com/Skydipper/Basemaps/blob/master/basemaps/validators.py#L13 to see where the year selection is currently being limited for pre-cached tiles.

[benlaken]

To test locally/remotley in python you can use the following example:

import folium

server = 'https://api.skydipper.com'
#server = 'http://localhost:9000'
url = f"{server}/v1/basemaps/landsat/2012/{{z}}/{{x}}/{{y}}"
print(url)
map = folium.Map(
        location=[0, 0],
        zoom_start=3,
        tiles='OpenStreetMap',
        detect_retina=True,
        prefer_canvas=True
)
map.add_tile_layer(tiles=url, attr="blah")
map