[MapProxy] add a wmts layer

[Martijn Coenen]

Hello Seth,

>  I am attempting to add a wmts layer to mapproxy.  I have tried a few different configurations
> basing the configs from the documentation (http://mapproxy.org/docs/nightly/sources.html#tiles)
> but nothing successful.  Here is an example link from our wmts server

In theory, it's easy to do:
sources:
  myWMTSlayer:
    type: tile
    url: http://10.10.4.32/geowebcache/service/wmts?request=GetTile&Layer=OMAN&Format=image/png&TileMatrixSet=EPSG:4326&TileMatrix=EPSG:4326:%(z)s &TileRow=%(x)s&TileCol=%(y)s

Don't forget the correct grid.

But on the other hand, I haven't been able to use our WMTS service in Mapproxy, but that's a different problem as yours as I have some trouble getting the projections right on that layer.

Martijn