ci-fairy: allow to fetch private dependent repos

Right now ci-fairy assumes that remotes are public.
However, we can pass the CI_JOB_TOKEN to retrieve
private upstream projects.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
10 jobs for master in 3 minutes and 57 seconds (queued for 1 second)
Child pipeline (parent)
Status Job ID Name Coverage
  Centos Container Build
passed #7714136
centos:7@container-build@x86_64

00:02:46

passed #7714138
centos:8@container-build@x86_64

00:01:25

passed #7714137
centos@cache-container-build@x86_64

00:02:46

 
  Centos Check
passed #7714140
centos:7@base-image@x86_64

00:01:10

passed #7714139
centos:7@check@x86_64

00:00:20

passed #7714145
centos:8@check@x86_64

00:00:15

passed #7714141
centos@cache-check@x86_64

00:00:10

passed #7714143
check labels centos@x86_64:7

00:00:13

passed #7714142
do not rebuild centos:7@container-build@x86_64

00:00:31

passed #7714144
pull upstream centos:7@container-build@x86_64

00:00:39