Propagate the error values from marine yaml to the b2i converters

[givelberg]

The file
marine_bufr_dump_config.yaml
for example

   - name: insitu_surface_ndbc
      variables:
        - name: 'seaSurfaceTemperature'
          provider_var: insitu_temp_surface_ndbc
          error: 0.3 
      data_format: mbuoyb
      subsets: mbuoyb
      source: NCEP data tank
      data_type: ndbc
      data_description: 6-hrly in situ NDBC buoy temperature obs 
      data_provider: U.S. NOAA
      dump_tag: mbuoyb         

the error value of 0.3 is not read by the converter and is currently hard-coded in
the converter

[ilianagenkova]

@givelberg , is this work done ? Can we close the issues?