Fix pseudo git HTTP urls broken since 59c82659

Signed-off-by: Sylvain Rabot <sylvain@abstraction.fr>

api/loader/fileloader.go

@@ -4,6 +4,7 @@
 package loader
 
 import (
+	"errors"
 	"fmt"
 	"io/ioutil"
 	"log"
@@ -298,10 +299,14 @@ func (fl *fileLoader) errIfRepoCycle(newRepoSpec *git.RepoSpec) error {
 }
 
 // Load returns the content of file at the given path,
-// else an error.  Relative paths are taken relative
+// else an error. Relative paths are taken relative
 // to the root.
 func (fl *fileLoader) Load(path string) ([]byte, error) {
 	if u, err := url.Parse(path); err == nil && (u.Scheme == "http" || u.Scheme == "https") {
+		_, err := git.NewRepoSpecFromUrl(path)
+		if err == nil {
+			return nil, errors.New("URL is a git repository")
+		}
 		var hc *http.Client
 		if fl.http != nil {
 			hc = fl.http