Adding py27 for nfv

Adds a py27 unit test target for nfv.
The unit tests for nfv were written using nose.

Change-Id: I001995be5f2af1d45242eb3c0e05e0615352b173
Signed-off-by: Al Bailey <Al.Bailey@windriver.com>

requirements.txt

@@ -0,0 +1,2 @@
+SQLAlchemy!=1.1.5,!=1.1.6,!=1.1.7,!=1.1.8  # MIT
+stevedore  # Apache-2.0

test-requirements.txt

@@ -1,3 +1,6 @@
 bashate >= 0.2
 PyYAML >= 3.1.0
 yamllint >= 0.5.2
+# The following are for py27 and py35
+mock  # BSD
+nose  # LGPL

tox.ini

@@ -10,7 +10,10 @@ setenv = VIRTUAL_ENV={envdir}
          OS_STDOUT_CAPTURE=1
          OS_STDERR_CAPTURE=1
          OS_TEST_TIMEOUT=60
-deps = -r{toxinidir}/test-requirements.txt
+         PYTHONDONTWRITEBYTECODE=True
+commands = find {toxinidir} -type f -not -path '{toxinidir}/.tox/*' -not -path '*/__pycache__/*' -name '*.py[c|o]' -delete
+deps = -r{toxinidir}/requirements.txt
+       -r{toxinidir}/test-requirements.txt
 
 [testenv:linters]
 whitelist_externals = bash
@@ -60,3 +63,21 @@ commands =
 
 [testenv:venv]
 commands = {posargs}
+
+[nosetests]
+verbosity=2
+
+[testenv:py27]
+basepython = python2.7
+deps = {[testenv]deps}
+       {toxinidir}/nfv/nfv-client
+       {toxinidir}/nfv/nfv-common
+       {toxinidir}/nfv/nfv-plugins
+       {toxinidir}/nfv/nfv-vim
+whitelist_externals = cp
+                      find
+recreate = True
+commands = {[testenv]commands}
+           cp -v nfv/nfv-tests/nfv_unit_tests/test_data/nfv_vim_db_18.03_GA {envdir}/
+           nosetests --exe -w nfv/nfv-tests/nfv_unit_tests/tests/ '{posargs}'
+