Kleaf: default enable --experimental_gzip_is_pigz

This removes the flag for fast builds and generally enables pigz
in place of gzip.

Bug: 243389125
Bug: 315488400
Change-Id: I5de045f68b607befee17997c12621455379d1c8e
Signed-off-by: Matthias Maennich <maennich@google.com>
1 file changed