Increase default test timeout for timeout fixture

This commit increases the default timeout for a test specified in
.testr.conf from 250 secs to 500 secs. The default build timeout
used for waiting for resource deletion is 400 secs. By using a test
timeout that was smaller than the build timeout some slow async
resource creation and deletions weren't completing before the test
was marked as failed for taking to long

Change-Id: Ia6292e68a8c3a0a0c03667a15f528c2ec6a5fbed
Partial-Bug: #1218585
diff --git a/.testr.conf b/.testr.conf
index 510f4c9..05b12c4 100644
--- a/.testr.conf
+++ b/.testr.conf
@@ -1,7 +1,7 @@
 [DEFAULT]
 test_command=OS_STDOUT_CAPTURE=${OS_STDOUT_CAPTURE:-1} \
              OS_STDERR_CAPTURE=${OS_STDERR_CAPTURE:-1} \
-             OS_TEST_TIMEOUT=${OS_TEST_TIMEOUT:-250} \
+             OS_TEST_TIMEOUT=${OS_TEST_TIMEOUT:-500} \
              ${PYTHON:-python} -m subunit.run discover -t ./ ./tempest $LISTOPT $IDOPTION
 test_id_option=--load-list $IDFILE
 test_list_option=--list