Initialize pkg/pub_dartdoc along the global dartdoc intialization. (#1383)
Initialize pkg/pub_dartdoc along the global dartdoc intialization. (#1383)

* Initialize pkg/pub_dartdoc along the global dartdoc intialization.

* Added timeout

dart-lang/pub-dev,dart-lang/pub-dev,dart-lang/pub-dev,dart-lang/pub-dev