Use new Code Connections process

[ipmb]

The old process was cumbersome and error-prone. The new process looks better. We should be able to create the connection via the CLI and then open a browser for the user to install the app at GitHub.

https://docs.aws.amazon.com/dtconsole/latest/userguide/connections-create-github.html#connections-create-github-cli

Relevant code:

• apppack/stacks/app_pipeline.go

  Lines 740 to 786 in 2b2da0d

  	func verifySourceCredentials(sess *session.Session, repositoryType string) error {
  	codebuildSvc := codebuild.New(sess)
  	sourceCredentialsOutput, err := codebuildSvc.ListSourceCredentials(&codebuild.ListSourceCredentialsInput{})
  	if err != nil {
  	return err
  	}
  	hasCredentials := false
  	for _, cred := range sourceCredentialsOutput.SourceCredentialsInfos {
  	if *cred.ServerType == repositoryType {
  	hasCredentials = true
  	}
  	}
  	if !hasCredentials {
  	var friendlySourceName string
  	if repositoryType == "BITBUCKET" {
  	friendlySourceName = "Bitbucket"
  	} else if repositoryType == "GITHUB" {
  	friendlySourceName = "GitHub"
  	} else {
  	return fmt.Errorf("unsupported repository type: %s", repositoryType)
  	}
  	ui.Spinner.Stop()
  	ui.PrintWarning(fmt.Sprintf("CodeBuild needs to be authenticated to access your repository at %s", friendlySourceName))
  	fmt.Println("On the CodeBuild new project page:")
  	fmt.Printf(" 1. Scroll to the %s section\n", aurora.Bold("Source"))
  	fmt.Printf(" 2. Select %s for the %s\n", aurora.Bold(friendlySourceName), aurora.Bold("Source provider"))
  	fmt.Printf(" 3. Keep the default %s\n", aurora.Bold("Connect using OAuth"))
  	fmt.Printf(" 4. Click %s\n", aurora.Bold(fmt.Sprintf("Connect to %s", friendlySourceName)))
  	fmt.Printf(" 5. Click %s in the popup window\n", aurora.Bold("Confirm"))
  	fmt.Printf(" 6. %s You can close the browser window and continue with app setup here.\n\n", aurora.Bold("That's it!"))
  	newProjectURL := fmt.Sprintf("https://%s.console.aws.amazon.com/codesuite/codebuild/project/new", *sess.Config.Region)
  	url, err := auth.GetConsoleURL(sess, newProjectURL)
  	if err == nil && isatty.IsTerminal(os.Stdin.Fd()) {
  	fmt.Println("Opening the CodeBuild new project page now...")
  	err = browser.OpenURL(*url)
  	if err != nil {
  	fmt.Println("Open this URL in your browser to view logs:")
  	fmt.Println(*url)
  	}
  	} else {
  	fmt.Printf("Visit the following URL to authenticate: %s", newProjectURL)
  	}
  	ui.PauseUntilEnter("Finish authentication in your web browser then press ENTER to continue.")
  	return verifySourceCredentials(sess, repositoryType)
  	}
  	return nil
  	}

• https://github.com/apppackio/apppack-docs/blob/61a96fdf4424663f235f03a3d52c593e8b90a6b2/src/tutorials/deploy-first-app.md#L50-L60