Merge pull request #15926 from owncloud/install-empty-pw

Make it possible to pass empty database passwords to install command

core/command/maintenance/install.php

@@ -49,7 +49,7 @@ class Install extends Command {
 			->addOption('database-name', null, InputOption::VALUE_REQUIRED, 'Name of the database')
 			->addOption('database-host', null, InputOption::VALUE_REQUIRED, 'Hostname of the database', 'localhost')
 			->addOption('database-user', null, InputOption::VALUE_REQUIRED, 'User name to connect to the database')
-			->addOption('database-pass', null, InputOption::VALUE_REQUIRED, 'Password of the database user')
+			->addOption('database-pass', null, InputOption::VALUE_REQUIRED, 'Password of the database user', null)
 			->addOption('database-table-prefix', null, InputOption::VALUE_OPTIONAL, 'Prefix for all tables (default: oc_)', null)
 			->addOption('admin-user', null, InputOption::VALUE_REQUIRED, 'User name of the admin account', 'admin')
 			->addOption('admin-pass', null, InputOption::VALUE_REQUIRED, 'Password of the admin account')
@@ -102,6 +102,9 @@ class Install extends Command {
 			$dbTablePrefix = (string) $input->getOption('database-table-prefix');
 			$dbTablePrefix = trim($dbTablePrefix);
 		}
+		if ($input->hasParameterOption('--database-pass')) {
+			$dbPass = (string) $input->getOption('database-pass');
+		}
 		$adminLogin = $input->getOption('admin-user');
 		$adminPassword = $input->getOption('admin-pass');
 		$dataDir = $input->getOption('data-dir');