Merge branch 'fixBug' into 'branch-0.4.0'

MS-467: temp revert

See merge request megasearch/milvus!475

Former-commit-id: 8c9c098a5315b97817f070562070058c36a809d2

cpp/unittest/db/utils.cpp

@@ -124,11 +124,12 @@ zilliz::milvus::engine::DBMetaOptions MySQLTest::getDBMetaOptions() {
 zilliz::milvus::engine::Options MySQLDBTest::GetOptions() {
     auto options = engine::OptionsFactory::Build();
     options.meta.path = "/tmp/milvus_test";
-    options.meta.backend_uri = DBTestEnvironment::getURI();
-
-    if(options.meta.backend_uri.empty()) {
-        options.meta.backend_uri = "mysql://root:Fantast1c@192.168.1.194:3306/";
-    }
+//    options.meta.backend_uri = DBTestEnvironment::getURI();
+//
+//    if(options.meta.backend_uri.empty()) {
+//        options.meta.backend_uri = "mysql://root:Fantast1c@192.168.1.194:3306/";
+//    }
+    options.meta.backend_uri = "mysql://root:Fantast1c@192.168.1.194:3306/";
 
     return options;
 }