DEVELOPERS: add Julien Olivain for package/openblas
The package has been orphan since commit ee58353 (2018-12-22).
Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit 90ffab4011fa42492e12335a93ce749d60d8190c)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Julien Olivain