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/helpers/serverspec/spec_helper.rb

@@ -0,0 +1,26 @@
+require 'serverspec'
+require 'net/http'
+require 'json'
+
+set :backend, :exec
+
+require 'rspec/retry'
+
+RSpec.configure do |config|
+  # show retry status in spec process
+  config.verbose_retry = true
+  # show exception that triggers a retry if verbose_retry is set to true
+  config.display_try_failure_messages = true
+end
+
+def curl_json(uri, username=nil, password=nil)
+  uri = URI(uri)
+  req =  Net::HTTP::Get.new(uri)
+  if username && password
+    req.basic_auth username, password
+  end
+  res = Net::HTTP.start(uri.hostname, uri.port) {|http|
+    http.request(req)
+  }
+  return JSON.parse(res.body)
+end