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/vars/Debian.yml

@@ -0,0 +1,4 @@
+---
+java: "{% if es_java is defined %}{{es_java}}{% else %}openjdk-8-jre-headless{% endif %}"
+default_file: "/etc/default/elasticsearch"
+es_home: "/usr/share/elasticsearch"

ansible/roles/elastic.elasticsearch/vars/RedHat.yml

@@ -0,0 +1,4 @@
+---
+java: "{{ es_java | default('java-1.8.0-openjdk.x86_64') }}"
+default_file: "/etc/sysconfig/elasticsearch"
+es_home: "/usr/share/elasticsearch"

ansible/roles/elastic.elasticsearch/vars/main.yml

@@ -0,0 +1,8 @@
+---
+es_package_url: "https://download.elastic.co/elasticsearch/elasticsearch/elasticsearch"
+es_conf_dir: "/etc/elasticsearch"
+sysd_script: "/usr/lib/systemd/system/elasticsearch.service"
+init_script: "/etc/init.d/elasticsearch"
+#add supported features here
+supported_xpack_features: ["alerting","monitoring","graph","security"]
+reserved_xpack_users: ["elastic","kibana","logstash_system"]