Initial layout of Designate tempest plugin

See https://review.openstack.org/283511 for history.

Change-Id: I7733e8786d6b525a7c9a8d4f12add329cd030d9d
Partially-Implements: blueprint designate-tempest-plugin
diff --git a/tools/pretty_tox.sh b/tools/pretty_tox.sh
new file mode 100755
index 0000000..0fc3605
--- /dev/null
+++ b/tools/pretty_tox.sh
@@ -0,0 +1,6 @@
+#! /bin/sh
+
+TESTRARGS=$1
+
+exec 3>&1
+status=$(exec 4>&1 >&3; ( python setup.py testr --slowest --testr-args="--subunit $TESTRARGS"; echo $? >&4 ) | subunit-trace -f) && exit $status