GitLab

* 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

* Add cluster.json template
* Add file provisioner to floating ip attachment to place cluster.json
  file onto admin node

* Add security group so that 8080 and 8443 can be accessed
* Request a second floating IP attached to the first mon instance for
  the interface
* Add more setup to the cloud-init.yml file to include salt-minion setup
* Break out cloud-init.yml for admin node to set up minion and master,
  in addition to installing ceph-salt

* Remove extra disk on mon node(s)
* Rename manager instance to admin to be more consistent with documentation

* 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