ask.opnfv.org has been shut down. If you have questions related to OPNFV or need support with using one of the installers, please do one of the following:
Create a StackOverflow post using the tag [opnfv]
Since there aren't many questions in StackOverflow yet, you may want to follow up with an email to opnfv-users requesting a response.
Ask your question on IRC in #opnfv on Freenode.net
Make sure to stick around, or list your email so someone answer can get a hold of you.