Fix feature variable name in template config file

[lbn-chef-team]

replace "feature" variable name with "feature_list" in some case in _ConfigurationFile.ini.erb file. This syntax error impede the cookbook to run install of 2016 or 2017 versions of MSSQL Server with the following error: undefined method `include?' for nil:NilClass.

Description

Fix this error: FATAL: Chef::Mixin::Template::TemplateError: undefined method `include?' for nil:NilClass
Template Context:

on line #330
328:
329: <% if @Version == '2016' %>
330: <% if @feature.include?('ADVANCEDANALYTICS' || 'SQL_SHARED_MR') %>
331: IACCEPTROPENLICENSETERMS=<%= @accept_eula %>
332:

System Info:

chef_version=13.0.118
platform=windows
platform_version=6.3.9600
ruby=ruby 2.4.1p111 (2017-03-22 revision 58053) [x64-mingw32]

Issues Resolved

[List any existing issues this PR resolves]

Check List

• All tests pass. See https://github.com/chef-cookbooks/community_cookbook_documentation/blob/master/TESTING.MD
• New functionality includes testing.
• New functionality has been documented in the README if applicable
• All commits have been signed for the Developer Certificate of Origin. See https://github.com/chef-cookbooks/community_cookbook_documentation/blob/master/CONTRIBUTING.MD

[TheLunaticScripter]

@lbn-chef-team Thank you for submitting this PR but as a requirement of contributing to the repo we require your PR to be signed. If you could take care of that it would be greatly appreciated. Thank you.

[lbn-chef-team]

yes! sorry for that, i'll take care henceforth.
you can delete this PR due to the existence of #117
that is the same fix.