Tests: fix tests not to use CWD

src/test/java/org/elasticsearch/index/analysis/KuromojiAnalysisTests.java

@@ -193,6 +193,7 @@ public class KuromojiAnalysisTests extends ElasticsearchTestCase {
 
     public AnalysisService createAnalysisService() {
         Settings settings = ImmutableSettings.settingsBuilder()
+                .put("path.home", createTempDir())
                 .loadFromClasspath("org/elasticsearch/index/analysis/kuromoji_analysis.json")
                 .put(IndexMetaData.SETTING_VERSION_CREATED, Version.CURRENT)
                 .build();

src/test/java/org/elasticsearch/index/analysis/KuromojiIntegrationTests.java

@@ -42,6 +42,7 @@ public class KuromojiIntegrationTests extends ElasticsearchIntegrationTest {
     protected Settings nodeSettings(int nodeOrdinal) {
         return ImmutableSettings.builder()
                 .put(super.nodeSettings(nodeOrdinal))
+                .put("path.home", createTempDir())
                 .put("plugins." + PluginsService.LOAD_PLUGIN_FROM_CLASSPATH, true)
                 .build();
     }