Units: don't pass --quiet to valgrind

Now the output of valgrind is recorded in a separate file.
So there is no reason to specify --quiet; more output is helpful
for debugging.

Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Units: specify --*-kind=* and --field=* to improve code coverages in semi-fuzzing

Signed-off-by: Masatake YAMATO <yamato@redhat.com>