Update bare exceptions to specify Exception.

This will keep us from accidentally catching program-exiting exceptions
like KeyboardInterupt and SystemExit.

lib/ansible/modules/network/nxos/nxos_file_copy.py

@@ -268,7 +268,7 @@ def transfer_file_to_device(module, dest):
     scp = SCPClient(ssh.get_transport())
     try:
         scp.put(module.params['local_file'], full_remote_path)
-    except:
+    except Exception:
         time.sleep(10)
         temp_size = verify_remote_file_exists(
             module, dest, file_system=module.params['file_system'])

lib/ansible/modules/network/nxos/nxos_snapshot.py

@@ -298,7 +298,7 @@ def write_on_file(content, filename, module):
         report = open(filepath, 'w')
         report.write(content)
         report.close()
-    except:
+    except Exception:
         module.fail_json(msg="Error while writing on file.")
 
     return filepath