Configure temporary whoosh_index_dir for tests

Otherwise a `<GALAXY_ROOT>/database/toolshed_whoosh_indexes` would
be reused, leading to failing tests when running tests locally.

lib/tool_shed/test/base/driver.py

@@ -80,11 +80,11 @@ def _setup_local(self):
             os.environ["GALAXY_TEST_TOOL_DATA_PATH"] = tool_data_path
         galaxy_db_path = driver_util.database_files_path(tool_shed_test_tmp_dir)
         shed_file_path = os.path.join(shed_db_path, "files")
-        hgweb_config_file_path = tempfile.mkdtemp(dir=tool_shed_test_tmp_dir)
+        whoosh_index_dir = os.path.join(shed_db_path, "toolshed_whoosh_indexes")
+        hgweb_config_dir = tempfile.mkdtemp(dir=tool_shed_test_tmp_dir)
         new_repos_path = tempfile.mkdtemp(dir=tool_shed_test_tmp_dir)
         galaxy_shed_tool_path = tempfile.mkdtemp(dir=tool_shed_test_tmp_dir)
         galaxy_migrated_tool_path = tempfile.mkdtemp(dir=tool_shed_test_tmp_dir)
-        hgweb_config_dir = hgweb_config_file_path
         os.environ["TEST_HG_WEB_CONFIG_DIR"] = hgweb_config_dir
         print("Directory location for hgweb.config:", hgweb_config_dir)
         toolshed_database_conf = driver_util.database_conf(shed_db_path, prefix="TOOL_SHED")
@@ -104,6 +104,7 @@ def _setup_local(self):
             smtp_server="smtp.dummy.string.tld",
             email_from="functional@localhost",
             use_heartbeat=False,
+            whoosh_index_dir=whoosh_index_dir,
         )
         kwargs.update(toolshed_database_conf)
         # Generate the tool_data_table_conf.xml file.