Configurations to deploy web server on port 80

[Natkeeran]

Github issue

Islandora/documentation#763

Changes

• Adds/moves web server port related configuration into group_vars so the person deploying it does not have to hunt them down.

Testing

• In order to change the web server port, you have to change it 4 places:

crayfish_milliner_drupal_base_url: http://localhost:8000
crayfish_milliner_gemini_base_url: http://localhost:8000/gemini 
milliner.baseUrl: http://localhost:8000/milliner/ (in alpaca_settings:)
apache_listen_port: 8000

Change the port to 80. Make the above changes. In vagrant, make sure to edit the Vagrantfile to forwarded to 80. Ensure that CRUD tests pass, including sync.

@dannylamb

[jonathangreen]

👍