tests,misc: Updated presubmit YAML to use main.py '-t' flag
tests,misc: Updated presubmit YAML to use main.py '-t' flag

This minor change reduces the presubmit build time by about 10 to 15
minutes.

Change-Id: I3a87d1a720b17fd22a9dbdbeebfb32e4be178c56
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/27064
Tested-by: Gem5 Cloud Project GCB service account <3d0911ab1a6a1eabeaa403a2d25f40ff020e2e59@cloudbuild.gserviceaccount.com>
Tested-by: kokoro <2ac7b1f3fa578934c95181d4272be0d3bca00121@google.com>
Reviewed-by: Gabe Black <5c8aa1266c03186393d9e7b3b4e3b14239af8201@google.com>
Maintainer: Jason Lowe-Power <92de577f37050ad05b60626d2f17913f40dcb1a2@gmail.com>

gem5/gem5,gem5/gem5,gem5/gem5,gem5/gem5,gem5/gem5,gem5/gem5,gem5/gem5