maintenance: force progress/no-quiet to children

maintenance: force progress/no-quiet to children

The --no-quiet option for 'git maintenance run' is supposed to indicate
that progress should happen even while ignoring the value of isatty(2).
However, Git implicitly asks child processes to check isatty(2) since
these arguments are not passed through.

The pass through of --no-quiet will be useful in a test in the next
change.

Signed-off-by: Derrick Stolee <stolee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>