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/oss.yml

@@ -0,0 +1,15 @@
+---
+- name: Standard test for single node setup. Tests idempotence.
+  hosts: localhost
+  post_tasks:
+    - include: elasticsearch/test/integration/debug.yml
+  roles:
+    - elasticsearch
+  vars:
+    es_instance_name: "node1"
+    es_enable_xpack: false
+    es_heap_size: "1g"
+    es_plugins:
+      - plugin: ingest-geoip
+
+#Do not add tests here. This test is run twice and confirms idempotency.