CLI daffodil test default behavior doesn't print diagnostics. Must use -iii option.

During some training work, users were running TDML files via the CLI.

Most were surprised (negatively) that the default behavior for a failing test is just to print out a single line indicating "[Failed]", but no diagnostic messages.

One can turn on diagnostic messages by providing the "-iii" option (3x "i" for "info").

We should consider changing the default behavior to output the diagnostics but have an option to disable this for times when you want only pass/fail output.