no nested xml tags on dependencies

lib/private/app/dependencyanalyzer.php

@@ -65,11 +65,11 @@ class DependencyAnalyzer {
 	}
 
 	private function analyseSupportedDatabases() {
-		if (!isset($this->dependencies['databases'])) {
+		if (!isset($this->dependencies['database'])) {
 			return;
 		}
 
-		$supportedDatabases = $this->dependencies['databases'];
+		$supportedDatabases = $this->dependencies['database'];
 		if (empty($supportedDatabases)) {
 			return;
 		}

tests/data/app/expected-info.json

@@ -23,7 +23,6 @@
 				"max-version": "5.5"
 			}
 		},
-		"databases": {
 		"database": [
 			{
 				"@attributes" : {
@@ -31,8 +30,7 @@
 				},
 				"@value": "sqlite"},
 			"mysql"
-			]
-		},
+		],
 		"command": [
 			{
 				"@attributes" : {

tests/data/app/valid-info.xml

@@ -21,10 +21,8 @@
 	<ocsid>166047</ocsid>
 	<dependencies>
 		<php min-version="5.4" max-version="5.5"/>
-		<databases>
 		<database min-version="3.0">sqlite</database>
 		<database>mysql</database>
-		</databases>
 		<command os="linux">grep</command>
 		<command os="windows">notepad.exe</command>
 	</dependencies>

tests/lib/app/dependencyanalyzer.php

@@ -77,7 +77,7 @@ class DependencyAnalyzer extends \PHPUnit_Framework_TestCase {
 			)
 		);
 		if (!is_null($databases)) {
-			$app['dependencies']['databases'] = $databases;
+			$app['dependencies']['database'] = $databases;
 		}
 		$analyser = new \OC\App\DependencyAnalyzer($app, $this->platformMock, $this->l10nMock);
 		$missing = $analyser->analyze();