Update CI config

9 jobs for master in 22 seconds (queued for 2 seconds)
latest
Status Job ID Name Coverage
  Test
passed #98107
py27-django111-jsonfield0

00:00:10

passed #98108
py27-django111-jsonfield1

00:00:10

passed #98109
py27-django111-jsonfield2

00:00:10

passed #98110
py36-django111-jsonfield1

00:00:11

passed #98111
py36-django111-jsonfield2

00:00:11

passed #98112
py36-django21-jsonfield1

00:00:09

passed #98113
py36-django21-jsonfield2

00:00:09

passed #98114
py36-django22-jsonfield1

00:00:08

passed #98115
py36-django22-jsonfield2

00:00:08