* Python 3 dict.values() returns iterator, must be converted to list
* use `u` prefix for unicode literals
* use builtins.str for handling unicode
* use oslo_serialisation for loading JSON objects
Can be tested with:
tox -e py35 -- -r monasca_api.tests.test_alarms.*
Story: 2001400
Task: 12580
Change-Id: I0cc7018f7d5efedb4937922b6daa2fb59b3d645c