tempest py26 setup

Simplifying the steps between devstack install and tempest run, by
 * installing tox<1.7, bacuse 1.7 is not compatible with our tox.ini
 * installing and patching 'discover' when the python version is 2.6

Change-Id: I8008837d2fae6cebeeeb051b63066279ca477e01
diff --git a/tools/fixup_stuff.sh b/tools/fixup_stuff.sh
index 7833278..e6a6a79 100755
--- a/tools/fixup_stuff.sh
+++ b/tools/fixup_stuff.sh
@@ -145,4 +145,11 @@
     # work unmolested.
     sudo ln -sf /usr/bin/nosetests1.1 /usr/local/bin/nosetests
 
+    # workaround for https://code.google.com/p/unittest-ext/issues/detail?id=79
+    install_package python-unittest2 patch
+    pip_install discover
+    (cd /usr/lib/python2.6/site-packages/; sudo patch <"$FILES/patches/unittest2-discover.patch" || echo 'Assume already applied')
+    # Make sure the discover.pyc is up to date
+    sudo rm /usr/lib/python2.6/site-packages/discover.pyc || true
+    sudo python -c 'import discover'
 fi