Missing resource type for some uploaded datasets

[Stella-Nthenya]

Steps to reproduce

1. Upload this dataset
2. Verify that it has been assigned the correct resource type

Expected Behaviour

The dataset resource type is assigned.

Actual Behaviour

resource type is missing.

[giohappy]

@marthamareal apparently this happens becuase of the additional files contained inside the sample dataset. If only the 4 files for the shapefile are uploaded the resource_type is correctly assigned.

Also notice that the dataset is correctly imorted in Geoserver, and the thumbnail is created.
I suspect that an exception occurs during the processing of the additional files and the resource_type assignment is skipped.

[giohappy]

closing in favour fo GeoNode#8721