Add genotype job tests

[vivbak]

This PR adds the genotype job tests as described https://miro.com/app/board/uXjVPPN9TaM=/

Not every use case was handled as expected, described below

Config Param	Value	Reason
ref_fasta	A non-existent reference file	We'd need to either run the hail batch job, OR add file validation to the genotype job
	A file of the incorrect format for a reference	As above
scatter_count_genotype	0 or negative value	According to the testing documentation this should fail. It does not. The current behaviour is to default to 1 if an invalid value is set.
reblock_gq_bands	10	This tests fails, but I don't think it should. Commented out for now. Should we update implementation?
	[0,10,20]	We'd either need to run the hail batch job, OR add additional validation.
	[10,20,500]	As above
	{10,20,30}	This input is not invalid, it will be processed like a list and is passed correctly to the tool

[KatalinaBobowik]

From an analysis perspective, this looks good to me. The only thing I can't really comment on is the GQ band thresholding, and why these intervals are chosen (@silkm not sure if you know more about this?). Otherwise 👍

[KatalinaBobowik]

👍

[violetbrina]

From the Software side it looks good to me!