rose test-battery: rename of `rose test-suite`.
Colour error if connected to a terminal.
t/rose-task-run/00-run-basic.t: tidy up.

Remove suite run directory on success.
t/rose-mpi-launch: fix usage test.
Merge pull request #681 from matthewrmshin/tidy.t.rose-task-run

t/rose-task-run/00-run-basic.t: tidy up.
Merge pull request #679 from matthewrmshin/test-battery

rose test-battery and colour errors red