Add my ssh key.

Add my ssh key to users.pp.  I will need ssh access to the Asterisk
server to be able to debug issues.

Change-Id: Idab037c996c3b0a833310551c3a71fe763db7ecd
Add a skeleton asterisk server.

This commit adds a bare server that will be updated to become an
Asterisk server.

Change-Id: If54badab3269d8c8ce504f8bfcb0e5f79eeaeb69
Install Asterisk

Add the necessary bits to get Asterisk installed on the pbx node.
This is using Asterisk 11 from Digium's repo.

Change-Id: I200789c7ee7fc1fb2e0779a38db2ea35ead998ae
Merge "Add my ssh key."
Merge "Add a skeleton asterisk server."
Merge "Install Asterisk"