ci: Enable all of GLES3/3.1 testing for softpipe.

Now that we're not using so many job slots, it's easy to get these
jobs run in a reasonable amount of time (gles3 took 10 minutes for 4
cores, and gles31 was 15 minutes for 4 cores).

Acked-by: Michel Dänzer <mdaenzer@redhat.com>
3 files changed