Install docs on CentOS acceptance tests

.sync.yml

@@ -19,5 +19,3 @@ Gemfile:
       - gem: 'zabbixapi'
 spec/spec_helper.rb:
   mock_with: ':mocha'
-spec/spec_helper_acceptance.rb:
-  unmanaged: false

spec/spec_helper_acceptance.rb

@@ -1,5 +1,11 @@
 require 'voxpupuli/acceptance/spec_helper_acceptance'
 
-configure_beaker
+configure_beaker do |host|
+  # The CentOS docker image has a yum config that won't install docs, to keep used space low
+  # zabbix packages their SQL file as doc, we need that for bootstrapping the database
+  if host[:platform] =~ %r{el-7-x86_64} && host[:hypervisor] =~ %r{docker}
+    on(host, "sed -i '/nodocs/d' /etc/yum.conf")
+  end
+end
 
 Dir['./spec/support/acceptance/**/*.rb'].sort.each { |f| require f }