Attempting to fix the tox environments

* Corrected flake8 environment (running through hacking.sh)
* Added exception for netaddr for pip 1.5
* Ignoring no-source errors with coverage

Change-Id: I2017946fd0db7c69f6a2d8d0be0fc79f3c5d5439

tox.ini

@@ -1,22 +1,25 @@
 [tox]
-envlist = pep8,pyflakes,py27
+envlist = pep8,py27
 
 [testenv]
 setenv =
     VIRTUAL_ENV={envdir}
     PYTHONPATH = {toxinidir}/etc/barbican
+
+# Required for pip 1.5 | Temporally overriding for netaddr - GitHub #392 
+#install_command = pip install --allow-external netaddr --allow-unverified netaddr {opts} {packages}
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
 
-[testenv:pep8]
-commands = flake8
-
 [testenv:py27]
 commands = nosetests {posargs:--with-xcoverage --all-modules --cover-inclusive --traverse-namespace --with-xunit --cover-package=barbican}
 
 [testenv:coverage]
 commands = coverage html {posargs:--include="*barbican*"}
 
+[testenv:pep8]
+commands = {toxinidir}/tools/hacking.sh {posargs}
+
 [flake8]
 # E711 ignored because of sqlalchemy override of == None
 # H ignored because it's not H clean