genomics: add option -minimum-coverage

Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
tests: use minimum coverage of 2

Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
tests: add launcher for Hopper

Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
tests: add spate launcher for Mira

Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
tests: fix launcher parameters

Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>