Issue #3312899 by nkoporec: Remove references to search_service_colony

function acquia_search_get_environment($conf = array()) {

  if (!empty($conf['acquia_subscription_id']) && !empty($conf['acquia_subscription_key'])) {

    $identifier = $conf['acquia_subscription_id'];

    $key = $conf['acquia_subscription_key'];

    $subscription = acquia_agent_get_subscription($params = array(), $identifier, $key);

  }

  else {

    $identifier = acquia_agent_settings('acquia_identifier');

    $subscription = acquia_agent_settings('acquia_subscription_data');

  }

  $search_host = variable_get('acquia_search_host', 'search.acquia.com');

  // @todo rework this logic once we have AH_SERVER_REGION

  // legacy_internal will be true if 'internal-' is the start of the host

  // name that's set in via Acquia Cloud platform or vset.

  $legacy_internal = preg_match('/internal[-.]/', $search_host);

  // Adding the subscription specific colony to the heartbeat data.

  if (!empty($subscription['heartbeat_data']['search_service_colony'])) {

    $search_host = $subscription['heartbeat_data']['search_service_colony'];

    if ($legacy_internal) {

      // If we want to be using an internal host name, fix the one

      // from the hearbeat data here.

      $search_host = 'internal-' . $search_host;

    }

  }

  // Check if we are on Acquia Cloud hosting. @see NN-2503.

  if (!empty($_ENV['AH_SITE_ENVIRONMENT']) && !empty($_ENV['AH_SERVER_REGION'])) {

    if ($_ENV['AH_SERVER_REGION'] == 'us-east-1' && $search_host == 'search.acquia.com') {