Mitigate PyYAML build crashing by pining Cython
Part of: cki-lib#30 (closed)
Signed-off-by: Tales Aparecida tales.aparecida@redhat.com
Edited by Tales da Aparecida
Part of: cki-lib#30 (closed)
Signed-off-by: Tales Aparecida tales.aparecida@redhat.com