feat(stack-creation): add the ability to specify git credentials (#1722)

* feat(stack-creation): add the ability to specify git credentials

* docs(api): update Swagger

api/git/git.go

@@ -1,6 +1,9 @@
 package git
 
 import (
+	"net/url"
+	"strings"
+
 	"gopkg.in/src-d/go-git.v4"
 )
 
@@ -14,12 +17,23 @@ func NewService(dataStorePath string) (*Service, error) {
 	return service, nil
 }
 
-// CloneRepository clones a git repository using the specified URL in the specified
+// ClonePublicRepository clones a public git repository using the specified URL in the specified
 // destination folder.
-func (service *Service) CloneRepository(url, destination string) error {
-	_, err := git.PlainClone(destination, false, &git.CloneOptions{
-		URL: url,
-	})
+func (service *Service) ClonePublicRepository(repositoryURL, destination string) error {
+	return cloneRepository(repositoryURL, destination)
+}
 
+// ClonePrivateRepositoryWithBasicAuth clones a private git repository using the specified URL in the specified
+// destination folder. It will use the specified username and password for basic HTTP authentication.
+func (service *Service) ClonePrivateRepositoryWithBasicAuth(repositoryURL, destination, username, password string) error {
+	credentials := username + ":" + url.PathEscape(password)
+	repositoryURL = strings.Replace(repositoryURL, "://", "://"+credentials+"@", 1)
+	return cloneRepository(repositoryURL, destination)
+}
+
+func cloneRepository(repositoryURL, destination string) error {
+	_, err := git.PlainClone(destination, false, &git.CloneOptions{
+		URL: repositoryURL,
+	})
 	return err
 }