* Enable `FetchContent` for `gflags` dependency in stress tests * Add `HAVE_SYS_STAT_H`, `HAVE_INTTYPES_H`, `INTTYPES_FORMAT` for stress tests
* Enable `FetchContent` for `gflags` dependency in stress tests * Add `HAVE_SYS_STAT_H`, `HAVE_INTTYPES_H`, `INTTYPES_FORMAT` for stress tests