fix wrong key of DestnationRule from name to host (#1445)
fix wrong key of DestnationRule from name to host (#1445)

(cherry picked from commit ca65403)

istio/istio.io,geeknoid/istio.github.io,geeknoid/istio.github.io,istio/istio.io,geeknoid/istio.github.io,istio/istio.io,istio/istio.io,linsun/istio.github.io,ZackButcher/istio.github.io,geeknoid/istio.github.io,istio/istio.io,linsun/istio.github.io,ZackButcher/istio.github.io,linsun/istio.github.io,linsun/istio.github.io,geeknoid/istio.github.io,linsun/istio.github.io,istio/istio.io,ZackButcher/istio.github.io,ZackButcher/istio.github.io,istio/istio.io