ceph-mds: do not enable multimds on jewel
ceph-mds: do not enable multimds on jewel

Multiple active MDS became stable in Luminous.

Introduced-by: c8573fe0d745e4667b5d757433efec9dac0150bc
Signed-off-by: Patrick Donnelly <d35c2028e065409a3eff47e1b4cba347a9379b4b@redhat.com>

ceph/ceph-ansible,fgal/ceph-ansible,fgal/ceph-ansible,ceph/ceph-ansible,font/ceph-ansible,font/ceph-ansible