Add the scripts used to build the LMS AMI

There is still a lot of fiddly manual work that needs to be done. Next
step is to clean that up and automate it end to end. This work can be
abstracted and reused for the virtual classroom.

When done, I'll put in a document with usage instructions.
Merge pull request #316 from binford2k/wip/lms_builder

Add the scripts used to build the LMS AMI