Large refactor to support Ansible 2.5 (trailofbits#976)

* Refactoring, booleans declaration and update users fix

* Make server_name more FQDN compatible

* Rename variables

* Define the default value for store_cakey

* Skip a prompt about the SSH user if deploying to localhost

* Disable reboot for non-cloud deployments

* Enable EC2 volume encryption by default

* Add default server value (localhost) for the local installation

Delete empty files

* Add default region to aws_region_facts

* Update docs

* EC2 credentials fix

* Warnings fix

* Update deploy-from-ansible.md

* Fix a typo

* Remove lightsail from the docs

* Disable EC2 encryption by default

* rename droplet to server

* Disable dependencies

* Disable tls_cipher_suite

* Convert wifi-exclude to a string. Update-users fix

* SSH access congrats fix

* 16.04 > 18.04

* Dont ask for the credentials if specified in the environment vars

* GCE server name fix

Author: jackivanov

.travis.yml

@@ -42,7 +42,6 @@ before_cache:
   - sudo chown $USER. $HOME/lxc/cache.tar
 
 env:
-  - LXC_NAME=ubuntu1804 LXC_DISTRO=ubuntu LXC_RELEASE=18.04
   - LXC_NAME=docker LXC_DISTRO=ubuntu LXC_RELEASE=18.04
 
 before_install:
@@ -67,8 +66,8 @@ install:
 script:
   # - awesome_bot --allow-dupe --skip-save-results *.md docs/*.md --white-list paypal.com,do.co,microsoft.com,https://github.com/trailofbits/algo/archive/master.zip,https://github.com/trailofbits/algo/issues/new
 # - shellcheck algo
-# - ansible-lint deploy.yml users.yml deploy_client.yml
-  - ansible-playbook deploy.yml --syntax-check
+# - ansible-lint main.yml users.yml deploy_client.yml
+  - ansible-playbook main.yml --syntax-check
   - ./tests/local-deploy.sh
   - ./tests/update-users.sh