Fix py35 tests

1) It's revealed that tox ran all tests under py27 instead
of py27 and py35
2) Method-discovery in human api was broken under py35 because
in py3 class methods are reported as functions not bound methods.

Change-Id: If57a624f96d912c9f89c6c97c37cb800df96957b

os_faults/api/human.py

@@ -37,7 +37,8 @@ Human API understands commands like these (examples):
 def list_actions(klazz):
     return set(m[0].replace('_', ' ') for m in inspect.getmembers(
         klazz,
-        predicate=lambda o: inspect.ismethod(o) and hasattr(o, '__public__')))
+        predicate=lambda o: ((inspect.isfunction(o) or inspect.ismethod(o)) and
+                             hasattr(o, '__public__'))))
 
 RANDOMNESS = {'one', 'random', 'some', 'single'}
 RANDOMNESS_PATTERN = '|'.join(RANDOMNESS)

tox.ini

@@ -15,7 +15,6 @@ deps = -r{toxinidir}/test-requirements.txt
 commands =
   find . -type f -name "*.pyc" -delete
   py.test -vvvv --html={envlogdir}/pytest_results.html --self-contained-html --durations=10 "os_faults/tests" {posargs}
-basepython = python2.7
 passenv = http_proxy HTTP_PROXY https_proxy HTTPS_PROXY no_proxy NO_PROXY
 
 [testenv:common-constraints]
@@ -35,12 +34,6 @@ commands = {posargs}
 install_command = {[testenv:common-constraints]install_command}
 commands = {posargs}
 
-[testenv:py34]
-basepython = python3.4
-
-[testenv:py35]
-basepython = python3.5
-
 [testenv:cover]
 commands =
     py.test --cov-config .coveragerc --cov-report html --cov=os_faults "os_faults/tests"