Switch over to oslosphinx

oslosphinx is the new name of oslo.sphinx

Closes-Bug: #1277168
Change-Id: Ibfb9e59fbb3ef51a821b4f412601e26cb7f703f4
diff --git a/test-requirements.txt b/test-requirements.txt
index 3fe2f27..8d64167 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -3,7 +3,7 @@
 docutils==0.9.1
 sphinx>=1.1.2,<1.2
 python-subunit>=0.0.18
-oslo.sphinx
+oslosphinx
 mox>=0.5.3
 mock>=1.0
 coverage>=3.6