v1.38: use to_json instead of to_yamol

* CLOUDBLD-1226

Signed-off-by: Robert Cerven <rcerven@redhat.com>

v1.37: generate list in jinja

* CLOUDBLD-1226

Signed-off-by: Robert Cerven <rcerven@redhat.com>

v1.36: don't use to_yaml

* CLOUDBLD-1226

Signed-off-by: Robert Cerven <rcerven@redhat.com>

v1.35: Add support for scratch builds node selector

Signed-off-by: Athos Ribeiro <athos@redhat.com>

v1.34: Add remove-unused-istags cronjob

OSBS-8042

Signed-off-by: Michael Simacek <msimacek@redhat.com>