MAGETWO-36068: Move dev/shell/log.php

- Changes based on CR feedback.

app/code/Magento/Log/Console/Command/LogCleanCommand.php

@@ -61,4 +61,4 @@ class LogCleanCommand extends AbstractLogCommand
         $model->clean();
         $output->writeln('<info>' . 'Log cleaned.' . '</info>');
     }
-}
\ No newline at end of file
+}

app/code/Magento/Log/Test/Unit/Console/Command/LogCleanCommandTest.php

@@ -36,5 +36,6 @@ class LogCleanCommandTest extends \PHPUnit_Framework_TestCase
         $objectManagerFactory->expects($this->once())->method('create')->willReturn($objectManager);
         $commandTester = new CommandTester(new LogCleanCommand($objectManagerFactory));
         $commandTester->execute(['--days' => '1']);
+        $this->assertEquals('Log cleaned.' . PHP_EOL, $commandTester->getDisplay());
     }
 }

app/code/Magento/Log/Test/Unit/Console/Command/LogStatusCommandTest.php

@@ -22,5 +22,7 @@ class LogStatusCommandTest extends \PHPUnit_Framework_TestCase
         $objectManagerFactory->expects($this->once())->method('create')->willReturn($objectManager);
         $commandTester = new CommandTester(new LogStatusCommand($objectManagerFactory));
         $commandTester->execute([]);
+        $this->assertStringStartsWith('-----------------------------------+------------+------------+------------+'
+            . PHP_EOL, $commandTester->getDisplay());
     }
 }