Update oslo before bringing in exceptions

I want to bring in the base OpenstackException for
the alarm api, so first updating what we currently have.

Change-Id: I8128f3420eac9ab42a9d679c7b291bac1f27e5b0
Update WSME dependency

The current tests fail if WSME is not at this version at least.

Change-Id: I87c79ec4687bfe39bdc6e56f11342879996751c0
Signed-off-by: Julien Danjou <julien@danjou.info>
Merge "Update oslo before bringing in exceptions"
Merge "Update WSME dependency"