Fix swift functional test

The swift functional test "test_delayed_delete_with_auth" was failing
with a permission error trying to write to /var/lib/glance.

Change the test's scrubber_datadir to be /tmp which is world writable.

Fixes bug 1291512.

Change-Id: I522c95619db26d009bd2ecb12fd02cb2eca56569
Imported Translations from Transifex

Change-Id: I02af1f32fcbc4618380175ce06b09620a5d5a94c
Add CONTRIBUTING.rst

There is no CONTRIBUTING.rst file, so i add it.

Change-Id: Ib017bc49623f2238a32f316af02cbc22b6be7a5b
Merge "Fix swift functional test"
Merge "Add CONTRIBUTING.rst"
Merge "Imported Translations from Transifex"