feat(github): add coreos-ssh-import-github user attribute

initialize/config.go

@@ -78,6 +78,12 @@ func Apply(cfg CloudConfig, env *Environment) error {
 					return err
 				}
 			}
+			if user.SSHImportGithubUser != "" {
+				log.Printf("Authorizing github user %s SSH keys for CoreOS user '%s'", user.SSHImportGithubUser, user.Name)
+				if err := SSHImportGithubUser(user.Name, user.SSHImportGithubUser); err != nil {
+					return err
+				}
+			}
 		}
 	}