sync and clean up oslo

- remove strutils, lockutils, excutils, jsonutils, importutils
- sync to Change-Id: I6b720c462b8a562e3276f9e64d723bc36fb5c842

Change-Id: I4febcbb583529feffbdacb0b6a090ed5aa3b7a0f
Work toward Python 3.4 support and testing

Change-Id: Ie58fdd755137c4ed8ff53b1f16819bd3a8ebcdf8
Hoist duplicated AlarmService initialization to super

api_client and _load_evaluators was duplicated across each service,
presumably needlessly*.

Discovered via pylint complaining about use of unitialize api_client
member.

* If there is a specific need for it to be otherwise that needs to
be made more clear.

Change-Id: I118edce87abd0e26ee0e963f44535b355a3752d0
Merge "sync and clean up oslo"
Merge "Work toward Python 3.4 support and testing"
Merge "Hoist duplicated AlarmService initialization to super"