Fix to pass pep8 test and add pylint and py27 to the test

- Fix new_file_testing.py to pass pep8 test
- Add pylint and py27 to envlist for tox test
- Remove deprecated argument that will error on Python 2.7.14 on Ubuntu 17.10

Change-Id: Iabc22e75bac7366ba5b283ad0ea810847a53340c
Closes-Bug: #1730154

new_file_testing.py

@@ -1,2 +1 @@
 print('Added file for testing')
-

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 minversion = 2.0
-envlist = pep8
+envlist = pep8,pylint,py27
 skipsdist = True
 
 [testenv]
@@ -10,7 +10,7 @@ setenv =
    VIRTUAL_ENV={envdir}
    PYTHONWARNINGS=default::DeprecationWarning
 deps = -r{toxinidir}/test-requirements.txt
-commands = python setup.py test --slowest --testr-args='{posargs}'
+commands = python setup.py test
 
 [testenv:pep8]
 commands = flake8 {posargs}