使用glide mirror

使用glide mirror下载一些不能访问的golang库，需要在glide的mirrors.yaml中进行配置。
下方是我整理的一些可用的mirror库：

repos:

• original: golang.org/x/crypto
  repo: github.com/golang/crypto
• original: golang.org/x/sys
  repo: github.com/golang/sys
• original: https://google.golang.org/appengine
  repo: https://github.com/golang/appengine
  vcs: git
• original: https://golang.org/x/crypto
  repo: https://github.com/golang/crypto
  vcs: git
• original: https://golang.org/x/image
  repo: https://github.com/golang/image
  vcs: git
• original: https://golang.org/x/mobile
  repo: https://github.com/golang/mobile
  vcs: git
• original: https://golang.org/x/net
  repo: https://github.com/golang/net
  vcs: git
• original: https://golang.org/x/sync
  repo: https://github.com/golang/sync
  vcs: git
• original: https://golang.org/x/sys
  repo: https://github.com/golang/sys
  vcs: git
• original: https://golang.org/x/sys
  repo: https://github.com/golang/sys
  vcs: git
• original: https://golang.org/x/sys/unix
  repo: https://github.com/golang/sys
• original: https://golang.org/x/sys/unix
  repo: https://github.com/golang/sys
• original: https://golang.org/x/text
  repo: https://github.com/golang/text
  vcs: git
• original: https://golang.org/x/text
  repo: https://github.com/golang/text
• original: https://golang.org/x/tools
  repo: https://github.com/golang/tools
  vcs: git
• original: https://google.golang.org/genproto
  repo: https://github.com/google/go-genproto
  vcs: git
• original: https://google.golang.org/grpc
  repo: https://github.com/grpc/grpc-go
  vcs: git