Add pypi publishing testing

Builds the source and wheel distribution as part of linting job to
assure we can build the package.

Adds packaging temp files to .gitignore to avoid poluting the
repository.

Adds a publish tox environment which can be used for manual publishing
on pypi (exceptional cases).

Change-Id: If9176b33cc13904a516d8e64d53170f52f2baf55

test-requirements.txt

@@ -19,3 +19,4 @@ testrepository>=0.0.18
 testscenarios>=0.4
 testtools>=1.4.0
 twine
+wheel

tox.ini

@@ -10,11 +10,14 @@ setenv =
    VIRTUAL_ENV={envdir}
 deps = -r{toxinidir}/test-requirements.txt
 commands = python setup.py test
+whitelist_externals =
+    bash
+    rm
 
 [testenv:linters]
 # py3 linters are able to stop more than py2 ones
 basepython = python3
-whitelist_externals = bash
+
 extras = insights
 commands =
   {[testenv:pep8]commands}
@@ -23,6 +26,7 @@ commands =
   pykwalify -d browbeat-complete.yaml -s browbeat/schema/browbeat.yml
   bash -c "set -e; for config in $(ls conf/); do \
     echo conf/$config; pykwalify -d conf/$config -s browbeat/schema/browbeat.yml; done"
+  {[testenv:dist]commands}
 
 [testenv:dist]
 basepython = python3
@@ -74,6 +78,14 @@ commands = python setup.py build_sphinx
 basepython = python3
 commands = oslo_debug_helper {posargs}
 
+[testenv:publish]
+envdir = {toxworkdir}/py27
+commands =
+    rm -rf dist/*
+    rm -rf build/*
+    python setup.py sdist bdist_wheel
+    twine upload dist/*
+
 [flake8]
 # E123, E125 skipped as they are invalid PEP-8.
 show-source = True