* Change system to use rmt host and fingerprint
* Update variables and documentation to reflect change

* Remove mgr instance resources from types
* Add app instance types with configurable amounts to create
* Update documentation and variables to include app instances
* Replace uses of `template_file` data with `templatefile` function
* Move `cluster.json` provisioner to user-data for admin node, removing
  dependency on adding a key to ssh-agent

* Add variable and docs in variables, tfvars example, and README
* Add locals (for null interpretation) to compute.tf

* Update documentation for clarity
* Document `terraform.tfvars.example`
* Update variables.tf to remove uab-specific variable defaults

* Remove erroneous disks from instance configuration
* Utilize dynamic blocks to add adjustable amounts of disks to OSD nodes

* Add cloud-init.yml to nodes to auto-license SUSE instances
* Rename 'bastion' instance to 'mgr' (manager)
* Add variable for DNS on public network and force DNS to a known-functional
  configuration by default
* Change instance image default from SLES 15 SP3 to SP2