Initial Shield support + latest gems + single plugin dir + new port/host vars

defaults/main.yml

@@ -1,6 +1,6 @@
 ---
 es_major_version: "2.x"
-es_version: "2.2.0"
+es_version: "2.3.4"
 es_version_lock: false
 es_use_repository: true
 es_start_service: true
@@ -13,13 +13,16 @@ es_templates: false
 es_user: elasticsearch
 es_group: elasticsearch
 es_config: {}
-es_install_shield: false
 #Need to provide default directories
 es_pid_dir: "/var/run/elasticsearch"
 es_data_dirs: "/var/lib/elasticsearch"
 es_log_dir: "/var/log/elasticsearch"
 es_work_dir: "/tmp/elasticsearch"
-es_plugin_dir: "/usr/share/elasticsearch/plugins"
 es_max_open_files: 65536
 es_allow_downgrades: false
-
+es_enable_xpack: false
+es_xpack_features: []
+#These are used for internal operations performed by ansible.
+#They do not effect the current configuration
+es_api_host: "localhost"
+es_api_port: 9200