Add ansible provisioning (#122)

* first ansible skeleton

* first commit of ansible installation of vulnwhisperer outside docker

* first ansible skeleton

* first commit of ansible installation of vulnwhisperer outside docker

* refactor the ansible role a bit

* update readme, add fail validation step to provision.yml and fix
typo when calling a logging funciton

ansible/roles/elastic.elasticsearch/test/integration/xpack.yml

@@ -0,0 +1,22 @@
+#Tests x-pack is idempotent and works when security is not enabled
+---
+- name: Elasticsearch Xpack tests - no security and manual download
+  hosts: localhost
+  post_tasks:
+    - include: elasticsearch/test/integration/debug.yml
+  roles:
+    - elasticsearch
+  vars:
+    es_api_port: 9200
+    es_instance_name: "node1"
+    es_config:
+      http.port: 9200
+      transport.tcp.port: 9300
+      discovery.zen.ping.unicast.hosts: "localhost:9300"
+    es_xpack_custom_url: "https://artifacts.elastic.co/downloads/packs/x-pack/x-pack-{{ es_version }}.zip"
+    es_heap_size: 2g
+    es_enable_xpack: true
+    es_xpack_features:
+      - monitoring
+      - graph
+      - ml