Add a post-test-hook to run the archive command

The archive_deleted_rows command in nova-manage is often-broken and
not well tested by us. We can test it to some degree in functional tests,
but running it against a real database with real deleted stuff in it
is a good idea. This adds a post-test hook and runs the archive so that
after a full test run in the gate, we'll see the output. Later, we should
make a failed run of this fatal, but for now, just run it so we can see
how close we are to being able to gate on it.

Change-Id: I16b2e00eede6af455cb74ca4e6ca951d56fdbcbc

tools/hooks/README

@@ -0,0 +1,4 @@
+These are hooks to be used by the OpenStack infra test system. These scripts
+may be called by certain jobs at important times to do extra testing, setup,
+etc. They are really only relevant within the scope of the OpenStack infra
+system and are not expected to be useful to anyone else.

tools/hooks/post_test_hook.sh

@@ -0,0 +1,17 @@
+#!/bin/bash -x
+
+MANAGE="/usr/local/bin/nova-manage"
+
+function archive_deleted_rows {
+    # NOTE(danms): Run this a few times to make sure that we end
+    # up with nothing more to archive
+    for i in `seq 30`; do
+        out=$($MANAGE db archive_deleted_rows --verbose --max_rows 1000)
+        echo $?
+        if [[ $out =~ "Nothing was archived" ]]; then
+            break;
+        fi
+    done
+}
+
+archive_deleted_rows