Add support for python 3.6

- This change increases the maxium
  version of python 3 to 3.6
- This change simplifes the tox.ini
  by deduplicating common sections.
- This change adds py36 to the default
  envlist.
- This change lists python 3 in the
  setuptools classifers.

comes from Sean Mooney at https://github.com/mfcloud/python-zvm-sdk/pull/7

Change-Id: Ied4b9f5eedb0fb8e4a696fc3722b2f571938233e

setup.py

@@ -37,6 +37,9 @@
         "Programming Language :: Python",
         "Programming Language :: Python :: 2",
         "Programming Language :: Python :: 2.7"
+        "Programming Language :: Python :: 3",
+        "Programming Language :: Python :: 3.5"
+        "Programming Language :: Python :: 3.6"
     ],
     entry_points={
         'wsgi_scripts': [

tox.ini

@@ -1,13 +1,17 @@
 [tox]
 minversion = 1.6
-envlist = pep8,py27,py35,docs
+envlist = pep8,py{27,35,36},docs
 skipsdist = True
 
 [testenv]
 usedevelop = True
 install_command = pip install -U {opts} {packages}
 setenv =
    VIRTUAL_ENV={envdir}
+deps = -r{toxinidir}/requirements.txt
+       -r{toxinidir}/test-requirements.txt
+commands = python -m unittest discover -v -s {toxinidir}/zvmsdk/tests/unit
+           python -m unittest discover -v -s {toxinidir}/smutLayer/tests/unit
 
 [testenv:pep8]
 deps = flake8
@@ -18,22 +22,8 @@ commands = flake8
 ignore = E121,E122,E123,E124,E125,E126,E127,E128,E129,E131,E251,H405
 exclude =  .venv,.git,.tox,dist,doc,*openstack/common*,sample,*lib/python*,*egg,build,tools,*.py.*.py
 
-[testenv:py27]
-deps = -r{toxinidir}/requirements.txt
-       -r{toxinidir}/test-requirements.txt
-commands = python -m unittest discover -v -s {toxinidir}/zvmsdk/tests/unit
-           python -m unittest discover -v -s {toxinidir}/smutLayer/tests/unit
-
-[testenv:py35]
-deps = -r{toxinidir}/requirements.txt
-       -r{toxinidir}/test-requirements.txt
-commands = python -m unittest discover -v -s {toxinidir}/zvmsdk/tests/unit
-           python -m unittest discover -v -s {toxinidir}/smutLayer/tests/unit
-
 [testenv:docs]
 whitelist_externals = rm
-deps = -r{toxinidir}/requirements.txt
-       -r{toxinidir}/test-requirements.txt
 commands =
   rm -rf doc/build
   python tools/generate_conf.py

zvmsdk/version.py

@@ -25,5 +25,5 @@
 _PYTHON_N = sys.version_info[1]
 if _PYTHON_M == 2 and _PYTHON_N < 7:
     raise RuntimeError('On Python 2, zvm sdk requires Python 2.7')
-elif _PYTHON_M == 3 and _PYTHON_N > 5:
-    raise RuntimeError('On Python 3, zvm sdk supports to Python 3.5')
+elif _PYTHON_M == 3 and _PYTHON_N > 6:
+    raise RuntimeError('On Python 3, zvm sdk supports to Python 3.6')