Need to add new test data sets to DSLite - cluster_int and cluster_slo

2 new test datasets have been added to the build used in the DataSHIELD testing infrastructure. These are in the CLUSTER project and called:

dtPatient_slo1-3 and dtPatient_int1-3 (i.e. 2 groups of 3 data sets).

I believe this just needs the datasets as .rda files, and then replicate what has been done for connections etc for the other datasets?

