bugfix: t::TestNginxLua: env TEST_NGINX_INIT_BY_LUA would break existing init_by_lua_file directive in the test case.
bugfix: t::TestNginxLua: env TEST_NGINX_INIT_BY_LUA would break existing init_by_lua_file directive in the test case.

yeahdongcn/SEnginx,yeahdongcn/SEnginx,yeahdongcn/SEnginx,yeahdongcn/SEnginx,yeahdongcn/SEnginx,yeahdongcn/SEnginx,yeahdongcn/SEnginx