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/templates/elasticsearch.repo

@@ -0,0 +1,11 @@
+[elasticsearch-{{ es_repo_name }}]
+name=Elasticsearch repository for {{ es_repo_name }} packages
+baseurl=https://artifacts.elastic.co/packages/{{ es_repo_name }}/yum
+gpgcheck=1
+gpgkey=https://artifacts.elastic.co/GPG-KEY-elasticsearch
+enabled=1
+autorefresh=1
+type=rpm-md
+{% if es_proxy_host is defined and es_proxy_host != '' and es_proxy_port is defined %}
+proxy=http://{{ es_proxy_host }}:{{es_proxy_port}}
+{% endif %}