fix permission check in tar/zip generator (gdi)

tests/test_httpcli.py

@@ -32,6 +32,8 @@ class Cfg(Namespace):
             no_zip=False,
             no_scandir=False,
             no_sendfile=True,
+            no_rescan=True,
+            ihead=False,
             nih=True,
             mtp=[],
             mte="a",

tests/util.py

@@ -91,7 +91,10 @@ class VHttpConn(object):
         self.auth = auth
         self.log_func = log
         self.log_src = "a"
+        self.lf_url = None
         self.hsrv = VHttpSrv()
         self.nbyte = 0
         self.workload = 0
+        self.ico = None
+        self.thumbcli = None
         self.t0 = time.time()