* add documentation for how to upgrade to the new external cloud provider
* add migrate_openstack_provider playbook
* fix codeblock syntax highligth
* make docs for migrating cloud provider better
* update grammar
* fix typo
* Make sure the code is correct markdown
* remove Fenced code blocks
* fix markdown syntax
* remove extra lines and fix trailing spaces
* add support for nova servergroups
* Add documentation for openstack nova servergroups
* uppdate to TF 0.12.12 format and fix etcd
* revert for_each change
* fix variables and formatting in main.tf
* try to avoid errors
* update variable
* Update main.tf
* Update main.tf
* update all other instance resources
* Add support for Kubernetes 1.16.1
* Defaults to 1.16.1
* add 1.16.2 checksums and set new version as default
* correct 1.16.2 checksums and add 1.15.5 checksums
* update openstack to terraform 0.12(.5)
* replace cluter.tf with cluster.tfvars
* update README.md to terraform 0.12
* update Openstack CI tests to use terraform 0.12
* specify terraform version in openstack README
* gitlab CI to copy cluster.tfvars in case of openstack provider
* The terraform/openstack dynamic inventory can read
tfstate v4 (generated by terraform 0.12) and convert them internally
ro v3 (as generated by terraform 0.11.x).
Additionally the script has been updated to Python 3.