message: Updated the sha256 for ngraph
diff: @@ -847,7 +847,7 @@ def tf_workspace(path_prefix = "", tf_repo_name = ""):
  "https://mirror.bazel.build/github.com/NervanaSystems/ngraph/archive/v0.7.0.tar.gz",
  "https://github.com/NervanaSystems/ngraph/archive/v0.7.0.tar.gz",
  ],
  - sha256 = "",
  + sha256 = "34434b6d5993ac5233538c84f498840db7ac91df82e225c379ee7c8f6de644a5",
  strip_prefix = "ngraph-0.7.0",
  build_file = clean_dep("//third_party/ngraph:ngraph.BUILD"),
  )
  