Add Access-Control-Expose-Headers (#12446)

Fix #12424

Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: silverwind <me@silverwind.io>

routers/api/v1/admin/user.go

@@ -370,5 +370,6 @@ func GetAllUsers(ctx *context.APIContext) {
 
 	ctx.SetLinkHeader(int(maxResults), listOptions.PageSize)
 	ctx.Header().Set("X-Total-Count", fmt.Sprintf("%d", maxResults))
+	ctx.Header().Set("Access-Control-Expose-Headers", "X-Total-Count, Link")
 	ctx.JSON(http.StatusOK, &results)
 }