blockdev-test: Clean up bogus drive_add argument

The first argument should be a PCI address, which pci-addr=auto isn't.
Doesn't really matter, as drive_add ignores its first argument when
its second argument has if=none.  Clean it up anyway.
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>
Message-id: 1412261496-24455-4-git-send-email-armbru@redhat.com
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>

tests/drive_del-test.c

@@ -83,7 +83,7 @@ static void test_after_failed_device_add(void)
      */
     response = qmp("{'execute': 'human-monitor-command',"
                    " 'arguments': {"
-                   "   'command-line': 'drive_add pci-addr=auto if=none,id=drive0'"
+                   "   'command-line': 'drive_add 0 if=none,id=drive0'"
                    "}}");
     g_assert(response);
     g_assert_cmpstr(qdict_get_try_str(response, "return"), ==, "OK\r\n");