wcst_import - Import coverage's local metadata from external text files

[Bang Pham Huu]

Currently, one needs to specify the keys, values of local metadata in general recipe (these keys/values belongs to input file (e.g: netCDF's metadata or tiff's tags).

In case, the metadata is not stored in an input file but as an corresponding external file (e.g: INSIPRE metadata .xml), one can add this setting in the ingredient file to allow to import the content of external metadata file as a part of coverage's local metadata:

          "metadata": {
            "type": "xml",
            "global": {
              "Title": "'Drought code'"
               },
             "local": {
                  "metadata_file": {
                       // metadata content from XML file will be the child element of this <INSPIRE> element
                      "root": "INSPIRE", 
                      "path": "/mnt/rasservice/DataImport/data/ICGC/OI_RGB_25m/${file:name}.xml"  
                   }
              }
          },