Dataset/publish endpoint should not require optional parameters

[anayeaye]

What

Missing optional parameters cause dataset/publish endpoint to fail with errors including:

{'loc': ('body', 'COGDataset', 'spatial_extent'), 'msg': 'field required', 'type': 'value_error.missing'}
{'loc': ('body', 'COGDataset', 'temporal_extent'), 'msg': 'field required', 'type': 'value_error.missing'}, 
{'loc': ('body', 'COGDataset', 'sample_files'), 'msg': 'field required', 'type': 'value_error.missing'}

Optional parameters causing errors

• spatial_extent
• temporal_extent
• sample_files

A dataset that will fail

dataset-config.json

{
  "assets": {
    "thumbnail": {
      "description": "Photo by [Mick Truyts](https://unsplash.com/photos/x6WQeNYJC1w) (Power plant shooting steam at the sky)",
      "href": "https://thumbnails.openveda.cloud/no2--dataset-cover.jpg",
      "roles": [
        "thumbnail"
      ],
      "title": "Thumbnail",
      "type": "image/jpeg"
    }
  },
  "collection": "OMI_trno2-COG-deleteme",
  "data_type": "cog",
  "description": "OMI_trno2 - 0.10 x 0.10 Annual as Cloud-Optimized GeoTIFFs (COGs)",
  "discovery_items": [
    {
      "bucket": "veda-data-store-staging",
      "datetime_range": "year",
      "discovery": "s3",
      "filename_regex": "^(.*).tif$",
      "prefix": "OMI_trno2-COG/"
    }
  ],
  "is_periodic": true,
  "license": "MIT",
  "providers": [
    {
      "name": "NASA VEDA",
      "roles": [
        "host"
      ],
      "url": "https://www.earthdata.nasa.gov/dashboard/"
    }
  ],
  "renders": {
    "dashboard": {
      "assets": [
        "cog_default"
      ],
      "colormap_name": "reds",
      "rescale": [
        [
          0,
          3000000000000000
        ]
      ],
      "title": "VEDA Dashboard Render Parameters"
    }
  },
  "time_density": "year",
  "title": "DELETE ME OMI_trno2"
}

AC

• Sensible defaults are used when optional parameters are not provided in request (instead of failing)