Add separate requirements file for Python 3

Separate requirements-py3.txt file allows to specify different
dependency list for python 3. For example, now python-memcached doesn't
support py3k and some other dependencies may appear later.  Also tox.ini
was changed to use proper requirements file for py33 testenv.

Partially-implements: blueprint py3k-support
Change-Id: I55aa0e3364124f27532465fcaa0b9316c7dc67e6

requirements-py3.txt

@@ -0,0 +1,18 @@
+pbr>=0.6,!=0.7,<1.0
+
+Babel>=1.3
+netaddr>=0.7.6
+falcon>=0.1.6,<0.2.0
+jsonschema>=2.0.0,<3.0.0
+iso8601>=0.1.9
+msgpack-python
+posix_ipc
+pymongo>=2.4
+python-keystoneclient>=0.7.0
+# python-memcached has no Py3k support for now
+# python-memcached>=1.48
+WebOb>=1.2.3
+stevedore>=0.14
+six>=1.6.0
+oslo.config>=1.2.0
+SQLAlchemy>=0.7.8,<=0.9.99

test-requirements-py3.txt

@@ -0,0 +1,23 @@
+# Metrics and style
+hacking>=0.8.0,<0.9
+
+# Packaging
+mock>=1.0
+
+# Unit testing
+ddt>=0.4.0
+discover
+fixtures>=0.3.14
+httpretty>=0.8.0
+python-subunit>=0.0.18
+testrepository>=0.0.18
+testtools>=0.9.34
+
+# Functional Tests
+requests>=1.1
+
+# Documentation
+sphinx>=1.1.2,<1.2
+oslosphinx
+openstack-doc-tools>=0.11
+

tox.ini

@@ -16,6 +16,10 @@ deps = -r{toxinidir}/requirements.txt
 #commands = nosetests {posargs}
 commands = python setup.py testr --slowest --testr-args='--concurrency 1 {posargs}'
 
+[testenv:py33]
+deps = -r{toxinidir}/requirements-py3.txt
+       -r{toxinidir}/test-requirements-py3.txt
+
 [tox:jenkins]
 downloadcache = ~/cache/pip