API - Prevent keys being logged

Until we add the ability for API keys to be sent by a header, GET requests may log the API key in the web server logs.

If you are using Apache, adjust the logging configuration for requests to /api/ to not log the request query string.

Amend /etc/apache2/sites-enabled/itflow.example.com. Comment the current logging configuration and add:

# API endpoints should not log query strings
SetEnvIf Request_URI "^/api/" is_api_request

# Standard Apache combined format, but without query strings
LogFormat "%h %l %u %t \"%m %U %H\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined_api

# API traffic
CustomLog ${APACHE_LOG_DIR}/access.log combined_api env=is_api_request

# Everything else
CustomLog ${APACHE_LOG_DIR}/access.log combined env=!is_api_request