zh: content_zh/blog/2018/egress-mongo/index.md (#2969)
zh: content_zh/blog/2018/egress-mongo/index.md (#2969)

* mongo-egress

* modified

istio/istio.io,geeknoid/istio.github.io,istio/istio.io,istio/istio.io,geeknoid/istio.github.io,istio/istio.io,istio/istio.io,istio/istio.io,geeknoid/istio.github.io,geeknoid/istio.github.io,geeknoid/istio.github.io,istio/istio.io