Fix spec archives one zip file twice (#1068)

fission/spec.go

@@ -975,7 +975,7 @@ func localArchiveFromSpec(specDir string, aus *ArchiveUploadSpec) (*fission.Arch
 	files := make([]string, 0)
 	if len(aus.IncludeGlobs) == 1 && archiver.Zip.Match(aus.IncludeGlobs[0]) {
 		files = append(files, aus.IncludeGlobs[0])
-	}
+	} else {
 		for _, relativeGlob := range aus.IncludeGlobs {
 			absGlob := rootDir + "/" + relativeGlob
 			f, err := filepath.Glob(absGlob)
@@ -986,6 +986,7 @@ func localArchiveFromSpec(specDir string, aus *ArchiveUploadSpec) (*fission.Arch
 			files = append(files, f...)
 			// xxx handle excludeGlobs here
 		}
+	}
 
 	if len(files) == 0 {
 		return nil, fmt.Errorf("Archive '%v' is empty", aus.Name)