Fixed up test-requirements

As a first step to OpenStack alignment, get test-requirements.txt in
line with current OpenStack standard practices.

Fixes: Bug #1205546
Change-Id: I899c3dc167df191b84008250671c58520c436a30

test-requirements.txt

@@ -0,0 +1,8 @@
+hacking>=0.5.3,<0.6
+
+coverage>=3.6
+discover
+testrepository>=0.0.13
+testtools>=0.9.27
+Babel>=0.9.6,<1.0
+argparse

tools/test-requires

@@ -1,2 +0,0 @@
-testtools
-fixtures

tox.ini

@@ -5,26 +5,12 @@ envlist = py26,py27,pep8
 setenv = LANG=en_US.UTF-8
          LANGUAGE=en_US:en
          LC_ALL=C
-deps=
-    testtools
-    testrepository
-    coverage
-    babel
+deps= -r{toxinidir}/test-requirements.txt
 commands=
     bash -c 'if [ ! -d ./.testrepository ] ; then testr init ; fi'
     bash -c 'testr run --parallel {posargs} ; RET=$?; echo "Slowest Tests" ; testr slowest && exit $RET'
 
-[testenv:py26]
-deps=
-    testtools
-    testrepository
-    coverage
-    babel
-    discover
-    argparse
-
 [testenv:pep8]
-deps = hacking>=0.5.3,<0.6
 commands =
   flake8 {posargs}
 
@@ -43,4 +29,3 @@ downloadcache = ~/cache/pip
 ignore = E125,H
 builtins = _
 exclude =  .venv,.git,.tox,dist,doc,*openstack/common*,*lib/python*,*egg,build
-