Change exception in ArmPackManager FLM reader

Author: sarahmarshy

tools/arm_pack_manager/__init__.py

@@ -161,7 +161,7 @@ def _get_sectors(self, device):
             algo_bin = algo_itr.next()
             flm_file = algo_bin.read()
             return PackFlashAlgo(flm_file).sector_sizes
-        except:
+        except Exception:
             return None
 
     def _extract_dict(self, device, filename, pack) :