Increase timeout for aw3d30 downloads
Increase timeout for aw3d30 downloads

That server sometimes takes some serious time to establish a connection

bearecinos/oggm,bearecinos/oggm,juliaeis/oggm,TimoRoth/oggm,juliaeis/oggm,anoukvlug/oggm,OGGM/oggm,TimoRoth/oggm,OGGM/oggm,anoukvlug/oggm