Cleanup tox / test deps

Change-Id: I4f18d98b71a18b7a314d52db8ff31bdef16ba2f1

tools/test-requires

@@ -1,9 +1,7 @@
 unittest2
 nose
-nosexcover
 openstack.nose_plugin
 nosehtmloutput
 mox
-coverage
 sphinx
 sphinxcontrib-httpdomain

tox.ini

@@ -15,13 +15,15 @@ setenv = VIRTUAL_ENV={envdir}
          NOSE_OPENSTACK_RED=0.05
          NOSE_OPENSTACK_YELLOW=0.025
          NOSE_OPENSTACK_SHOW_ELAPSED=1
-commands = nosetests --no-path-adjustment []
+commands = nosetests {posargs}
 sitepackages = False
 
 [testenv:cover]
 deps = {[testenv]deps}
        coverage
-commands = nosetests --no-path-adjustment --with-coverage --cover-erase --cover-package=moniker --cover-inclusive []
+       nosexcover
+setenv = {[testenv]setenv}
+         NOSE_WITH_COVERAGE=1
 
 [testenv:pep8]
 deps = {[testenv]deps}
@@ -32,3 +34,6 @@ commands = pep8 --repeat --show-source --exclude=.venv,.tox,dist,doc,openstack m
 deps = {[testenv]deps}
        pyflakes==0.5.0
 commands = pyflakes moniker bin setup.py
+
+[testenv:venv]
+commands = {posargs}