add python-virtualenv to deps, make keystone print to stdout
diff --git a/files/apts/general b/files/apts/general
index 4a7029e..ea37810 100644
--- a/files/apts/general
+++ b/files/apts/general
@@ -12,3 +12,4 @@
 vim-nox
 locate # useful when debugging
 munin
+python-virtualenv