Workaround crudini and iniparse unreleased py3 support

Install crudini and iniprase from GitHub to work around their
py3-supporting versions not being on PyPi. [1] and [2] for more
details.

[1] https://github.com/pixelb/crudini/issues/58
[2] https://github.com/candlepin/python-iniparse/issues/5

Change-Id: I6d3391e9a9bafa3f2294944a306d8dc9bd12f283

requirements.txt

@@ -3,3 +3,4 @@
 # process, which may cause wedges in the gate later.
 oslo.log
 tempest
+#crudini>=0.9.3

tox.ini

@@ -9,9 +9,14 @@ setenv =
 usedevelop = True
 install_command = pip install -U {opts} {packages}
 whitelist_externals = *
+# Until https://github.com/pixelb/crudini/issues/58 and
+# https://github.com/candlepin/python-iniparse/issues/5 are on PyPi, install
+# from GitHub.
 deps =
   -r{toxinidir}/requirements.txt
   -r{toxinidir}/test-requirements.txt
+  git+https://github.com/pixelb/crudini.git#egg=crudini
+  git+https://github.com/candlepin/python-iniparse.git#egg=iniparse
 commands =
   find . -type f -name "*.pyc" -delete
   stestr run {posargs}