Bumb travis Go version to 1.14 (#3716)
Bumb travis Go version to 1.14 (#3716)

Start using latest Go for .travis.

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