[scudo] Add unit tests for optional config flags

This patch adds checks for all optional configuration flags defined in
allocator_config.def to allocator_config_test.cpp. This increases the
code coverage of allocator_config_wrapper.h by exercising the template
instantiations for these optional flags.

GitOrigin-RevId: 8536f609854abb96d02a22a20a2772c8ee3337bc
1 file changed