Release: bump version to 1.2.4 (#2211)
Release: bump version to 1.2.4 (#2211)

Signed-off-by: Miek Gieben <00b357f94cf3a1145a32703fb42e2d80418ab806@miek.nl>
jremond/coredns,miekg/coredns,johnbelamaric/coredns,yongtang/coredns,miekg/coredns,chrisohaver/coredns,ii/coredns,coredns/coredns,jremond/coredns,johnbelamaric/coredns,ii/coredns