Add arguments to dbt test script

[andrewmogan]

When running test_daq-buildtools.sh with a particular release or daq-buildtools branch name, I found it a little cumbersome to manually change the correct lines in test_daq-buildtools.sh. This PR adds --release, --dbt-branch and --repo as optional command line arguments with sensible defaults.

Example:

./test_daq-buildtools.sh --release NFD_DEV_260201_A9 \
                         --dbt-branch johnfreeman/issue331_handle_deleted_repo \
                         --repo hdf5libs

[jcfreeman2]

I like this idea. Two comments about what's on the feature branch:

• Concerning l. 81 of test_daq-buildtools.sh, source ~/daq-buildtools/env.sh - is there a guarantee that this daq-buildtools repo will be the one which the script cloned?
• When I ran ./scripts/test_daq-buildtools.sh --release fddaq-v5.5.0-a9 --dbt-branch amogan/add_print_statements --repo snbmodules, I got ERROR: [02/09/26 16:16:08] [dbt-setup-release.sh:111]: Release path '/cvmfs/dunedaq-development.opensciencegrid.org/nightly/fddaq-v5.5.0-a9' does not exist. Note that you need to pass "-n" for a nightly build. Exiting... "

[jcfreeman2]

I see my concerns are addressed here, so approved.