Make sure that in SitePluginTests http client connects to the correct node and closes the node after the test
Made the `term_vector` json field the leading way of configuring term vectors. Supported options: `no`, `yes`, `with_offsets`, `with_positions`, `with_positions_offsets` and`with_positions_offsets_payloads`.
Fix test for Support trailing slashes on plugin _site URLs #2654