Added tox.ini files to subprojects

It is much more convenient to use tox for
managing virtual environments.

Change-Id: Ic4c82fc68b3a0a7fa92fc301b78f6139b28b818b
Closes-Bug: 1321904

.testr.conf

@@ -0,0 +1,4 @@
+[DEFAULT]
+test_command=OS_STDOUT_CAPTURE=1 OS_STDERR_CAPTURE=1 OS_TEST_TIMEOUT=60 ${PYTHON:-python} -m subunit.run discover -s shotgun/test/ -p "*.py" $LISTOPT $IDOPTION
+test_id_option=--load-list $IDFILE
+test_list_option=--list

requirements.txt

@@ -0,0 +1 @@
+Fabric==1.7.0

test-requirements.txt

@@ -0,0 +1,5 @@
+hacking>=0.8.0,<0.9
+mock>=1.0
+testrepository>=0.0.18
+unittest2
+discover

tox.ini

@@ -0,0 +1,43 @@
+[tox]
+minversion = 1.6
+skipsdist = True
+envlist = py26,py27,pep8
+
+[testenv]
+usedevelop = True
+install_command = pip install --allow-external -U {opts} {packages}
+setenv = VIRTUAL_ENV={envdir}
+deps = -r{toxinidir}/requirements.txt
+       -r{toxinidir}/test-requirements.txt
+commands =
+    python setup.py testr --slowest --testr-args='{posargs:}'
+
+[tox:jenkins]
+downloadcache = ~/cache/pip
+
+[testenv:pep8]
+usedevelop = False
+commands =
+    flake8 {posargs:shotgun}
+
+[testenv:cover]
+setenv = VIRTUAL_ENV={envdir}
+commands =
+    python setup.py testr --coverage {posargs:shotgun}
+
+[testenv:venv]
+commands = {posargs:}
+
+[testenv:devenv]
+envdir = devenv
+usedevelop = True
+
+[flake8]
+ignore = H234,H302,H802
+exclude = .venv,.git,.tox,dist,doc,*lib/python*,*egg,build,tools,__init__.py,docs
+show-pep8 = True
+show-source = True
+count = True
+
+[hacking]
+import_exceptions = testtools.matchers