PY3: wrap filter calls with list where list is expected

filter in PY2 returns list in PY3 it returns an iterator
21 jobs for metze-autobuild6 in 198 minutes and 24 seconds (queued for 1 second)
Status Name Job ID Coverage
  Build
passed build_ctdb #94848626
docker shared

00:21:05

passed build_others #94848630
docker shared

00:14:01

passed build_samba #94848631
docker private

03:18:21

passed build_samba_ad_dc #94848637
docker private

01:10:52

passed build_samba_ad_dc_2 #94848618
docker shared

00:41:14

passed build_samba_ad_dc_2_py3 #94848620
docker shared

00:24:12

passed build_samba_ad_dc_py3 #94848638
docker private

00:18:07

passed build_samba_ctdb #94848628
docker shared

00:38:49

passed build_samba_fileserver #94848636
docker private

00:18:05

passed build_samba_libs #94848621
docker shared

00:31:51

passed build_samba_libs_py3 #94848623
docker shared

00:35:38

passed build_samba_none_env #94848608
docker shared

00:44:35

passed build_samba_none_env_py3 #94848610
docker shared

00:24:28

passed build_samba_nopython #94848612
docker shared

00:29:41

passed build_samba_nt4 #94848634
docker private

00:48:24

passed build_samba_nt4_py3 #94848635
docker private

00:10:49

passed build_samba_o3 #94848617
docker shared

00:28:09

passed build_samba_py3 #94848633
docker private

00:16:58

passed build_samba_static #94848625
docker shared

00:46:11

passed build_samba_systemkrb5 #94848613
docker shared

00:17:56

passed build_samba_xc #94848614
docker shared

00:07:13