tests,misc: Updated tests/.gitignore to ignore test resources
tests,misc: Updated tests/.gitignore to ignore test resources

Tests run via main.py create some temp resources. These are now ignored.

Change-Id: I63e2b7e1d70f8813e12c2e538a633046d614f1d2
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/24324
Tested-by: kokoro <2ac7b1f3fa578934c95181d4272be0d3bca00121@google.com>
Reviewed-by: Bobby R. Bruce <b9dba908ffb6c6d8ffe449cc88b3709c13c485c2@ucdavis.edu>
Maintainer: Bobby R. Bruce <b9dba908ffb6c6d8ffe449cc88b3709c13c485c2@ucdavis.edu>

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