dump_guest_core: Fix AttributeError in dump_guest_core test

Remove process.TimeoutError from exception handling, as it doesn't
exist in avocado.utils.process module.

Signed-off-by: Wenkang Ji <[email protected]>

Author: heywji

qemu/tests/dump_guest_core.py

@@ -82,7 +82,7 @@ def check_vmcore_file():
     cmd = "dnf debuginfo-install -y %s" % " ".join(debuginfo_pkgs)
     try:
         process.run(cmd, timeout=900, shell=True)
-    except (process.CmdError, process.TimeoutError) as e:
+    except process.CmdError as e:
         test.fail("Failed to install debuginfo packages: %s" % e)
 
     trigger_core_dump_command = params["trigger_core_dump_command"]