build-push-ceph-container-imgs.sh: Building only FLAVORS
build-push-ceph-container-imgs.sh: Building only FLAVORS

The actual code is using the .all target which rebuilds all possibles FLAVORS.
In this part of the project, we only want to build the supported flavors encoded in the FLAVORS variable.

This patch switch from the .all to the .parallel targets to avoid using ALL_BUILDABLE_FLAVORS.

Signed-off-by: Erwan Velu <dbf153a4f846e5c13692f4d75719ee25e7660abd@redhat.com>

JrCs/ceph-docker,JrCs/ceph-docker,JrCs/ceph-docker