message: Revise console logging in Ref app
  Use Os::Log instead of custom implementation
diff: #include <cstdlib>
  #include <ctype.h>
  -#include "Fw/Logger/Logger.hpp"
  +#include <Os/Log.hpp>
  #include <Ref/Top/RefTopologyAc.hpp>
  void print_usage(const char* app) {
  @@ -12,33 +12,9 @@ void print_usage(const char* app) {
  #include <signal.h>
  #include <cstdio>
  -class Logger :
  - public Fw::Logger
  -{
  -
  - public:
  -
  - void log(
  - const char* fmt,
  - POINTER_CAST a0 = 0,
  - POINTER_CAST a1 = 0,
  - POINTER_CAST a2 = 0,
  - POINTER_CAST a3 = 0,
  - POINTER_CAST a4 = 0,
  - POINTER_CAST a5 = 0,
  - POINTER_CAST a6 = 0,
  - POINTER_CAST a7 = 0,
  - POINTER_CAST a8 = 0,
  - POINTER_CAST a9 = 0
  - ) {
  - printf(fmt, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9);
  - fflush(stdout);
  - }
  -
  -};
  -
  Ref::TopologyState state;
  -Logger logger;
  +// Enable the console logging provided by Os::Log
  +Os::Log logger;
  volatile sig_atomic_t terminate = 0;
  @@ -96,8 +72,6 @@ int main(int argc, char* argv[]) {
  }
  }
  - Fw::Logger::registerLogger(&logger);
  -
  (void) printf("Hit Ctrl-C to quit\n");
  state = Ref::TopologyState(hostname, port_number);
  