Check for ^nose

tests/runtests.sh

@@ -25,7 +25,7 @@ echo "* Activate virtualenv ..."
 source $CUR/venv/bin/activate
 
 # Install nose if not available
-pip freeze | grep nose > /dev/null
+pip freeze | grep "^nose" > /dev/null
 RC=$?
 
 if [ "$RC" -ne "0" ]; then