[misc] Try to fix flickering test by reducing parallelism even more
[misc] Try to fix flickering test by reducing parallelism even more

veronikaslc/phenotips,tmarathe/phenotips,JKereliuk/phenotips,alexhenrie/phenotips,mjshepherd/phenotips,danielpgross/phenotips,teyden/phenotips,veronikaslc/phenotips,tmarathe/phenotips,DeanWay/phenotips,teyden/phenotips,mjshepherd/phenotips,tmarathe/phenotips,phenotips/phenotips,mjshepherd/phenotips,itaiGershtansky/phenotips,itaiGershtansky/phenotips,alexhenrie/phenotips,DeanWay/phenotips,veronikaslc/phenotips,teyden/phenotips,DeanWay/phenotips,JKereliuk/phenotips,teyden/phenotips,teyden/phenotips,phenotips/phenotips,danielpgross/phenotips,JKereliuk/phenotips,phenotips/phenotips,phenotips/phenotips,itaiGershtansky/phenotips,danielpgross/phenotips,phenotips/phenotips,alexhenrie/phenotips