Ansible 2.3.0.0 remove reserved variable "hosts"

playbooks/role.yml

scripts/apache-config.yml

scripts/composer-update.yml

scripts/connectivity.yml

scripts/drupal-config.yml

scripts/drupal-deploy.yml

scripts/drush-aliases.yml

scripts/elastalert-rules.yml

scripts/elastalert.yml

scripts/fail2ban.yml

scripts/firewall-config.yml

scripts/fluentd-client.yml

scripts/fluentd.yml

scripts/haproxy-certs.yml

scripts/haproxy-config.yml

scripts/jailkit-update.yml

scripts/jailkit-upgrade.yml

scripts/localhost.yml

scripts/netdata.yml

scripts/network.yml