Fix visiblity of LiskDAO::getConfiguration()

Summary: Ref T6822.

Test Plan: `grep`

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: hach-que, Korvin, epriestley

Maniphest Tasks: T6822

Differential Revision: https://secure.phabricator.com/D11370

src/applications/fact/storage/PhabricatorFactAggregate.php

@@ -6,7 +6,7 @@ final class PhabricatorFactAggregate extends PhabricatorFactDAO {
   protected $objectPHID;
   protected $valueX;
 
-  public function getConfiguration() {
+  protected function getConfiguration() {
     return array(
       self::CONFIG_COLUMN_SCHEMA => array(
         'id' => 'auto64',

src/applications/fact/storage/PhabricatorFactCursor.php

@@ -5,7 +5,7 @@ final class PhabricatorFactCursor extends PhabricatorFactDAO {
   protected $name;
   protected $position;
 
-  public function getConfiguration() {
+  protected function getConfiguration() {
     return array(
       self::CONFIG_COLUMN_SCHEMA => array(
         'name' => 'text64',

src/applications/fact/storage/PhabricatorFactDAO.php

@@ -6,7 +6,7 @@ abstract class PhabricatorFactDAO extends PhabricatorLiskDAO {
     return 'fact';
   }
 
-  public function getConfiguration() {
+  protected function getConfiguration() {
     return array(
       self::CONFIG_TIMESTAMPS => false,
     ) + parent::getConfiguration();

src/applications/fact/storage/PhabricatorFactRaw.php

@@ -12,7 +12,7 @@ final class PhabricatorFactRaw extends PhabricatorFactDAO {
   protected $valueY;
   protected $epoch;
 
-  public function getConfiguration() {
+  protected function getConfiguration() {
     return array(
       self::CONFIG_COLUMN_SCHEMA => array(
         'id' => 'auto64',