Allow multiple SCM_URLs, playbooks

[AlanCoding]

Current code is only statically targeting a single git repo, and assuming only a single playbook. I would like to see the ability to put multiple urls for repos in the configuration data at the top of the create_data.py file. Statically listing a few playbooks to randomly choose from (for all job templates that use that project) would logically follow from this.

Also, an option to use "local" source control might help to avoid the absurdly huge waste of resources that comes from syncing them.