rgw: add a retry on pool related tasks
rgw: add a retry on pool related tasks

sometimes those tasks might fail because of a timeout.
I've been facing this several times in the CI, adding this retry might
help and won't hurt in any case.

Signed-off-by: Guillaume Abrioux <30a9df5a0293a6108675377fa1673f7aa713f915@redhat.com>

ceph/ceph-ansible,ceph/ceph-ansible