Add the sp_rand_init and sp_rand_cleanup tools.

These will be used on the worker node to set up a random volume name
prefix for the StorPool volumes and snapshots created during
the OpenStack CI run, and detach and remove them all later.

Change-Id: Ic558e2183db8068545f7454f956dc8bc740959c6
diff --git a/tools/bin/sp_rand_cleanup b/tools/bin/sp_rand_cleanup
new file mode 100755
index 0000000..f92b85a
--- /dev/null
+++ b/tools/bin/sp_rand_cleanup
@@ -0,0 +1,8 @@
+#!/bin/sh
+
+set -e
+
+pylib="$(dirname -- "$(dirname -- "$(readlink -f -- "$0")")")/sp-rand/src"
+pypath="${PYTHONPATH:+$PYTHONPATH:}$pylib"
+
+env PYTHONPATH="$pypath" /opt/storpool/python3/bin/python3 -B -u -m sp_rand.cleanup "$@"