Inconsistency in primary key data types for POST to /exports

[chambbj]

GRiD-API/swagger.v3.yaml

Lines 344 to 354 in 46b84ec

	- name: aoi
	in: formData
	description: The primary key of the AOI used to export from.
	required: true
	type: integer
	- name: products
	in: formData
	description: |
	A comma-separated list of product primary keys to include in the export.
	required: true
	type: string

The products parameter must be passed as a string to facilitate comma-separated specification of multiple product exports. On the other hand, the aoi parameter is an integer. Feels awkward and perhaps error prone to sometimes expect integer, other times strings. An alternative could be to pass an array of product pks.