[libc++] Mark local_time test as a long test

It can otherwise timeout under some slow configurations.

Author: ldionne

libcxx/cmake/caches/Generic-msan.cmake

@@ -1,2 +1,4 @@
 set(LLVM_USE_SANITIZER "MemoryWithOrigins" CACHE STRING "")
+set(LIBCXX_TEST_PARAMS "long_tests=False" CACHE STRING "") # MSAN is really slow and tests can sometimes timeout otherwise
+set(LIBCXXABI_TEST_PARAMS "${LIBCXX_TEST_PARAMS}" CACHE STRING "")
 set(LIBCXXABI_USE_LLVM_UNWINDER OFF CACHE BOOL "") # MSAN is compiled against the system unwinder, which leads to false positives

libcxx/test/std/time/time.zone/time.zone.timezone/time.zone.members/get_info.local_time.pass.cpp

@@ -8,11 +8,10 @@
 
 // UNSUPPORTED: c++03, c++11, c++14, c++17
 // UNSUPPORTED: no-filesystem, no-localization, no-tzdb
+// REQUIRES: long_tests
 
 // XFAIL: libcpp-has-no-experimental-tzdb
 // XFAIL: availability-tzdb-missing
-// Times out under HWASan
-// UNSUPPORTED: hwasan
 
 // <chrono>