[MapProxy] forward_req_params not working

[Charlton Galvarino]

Thanks, Oliver.  That did the trick.  I thought that disable_storage: true in a cache would be the equivalent of bypassing the cache altogether.  I guess the adage about assumptions strikes again!

A total MapProxy fan.

>> caches:
>>  ncep_gwes_cache:
>>    grids: [ncep_gwes_grid]
>>    sources: [ncep_gwes]
>>    disable_storage: true
>>    meta_size: [4, 4]