修正CI脚本，适配基于PULP的YUM仓库。

platform/src/proxy.cpp

@@ -405,7 +405,7 @@ static bool tfe_breakpad_dump_callback(const google_breakpad::MinidumpDescriptor
 /* COREDUMP GENERATE TEST */
 static void segv_generate()
 {
-	char * _NULLPTR = NULL;
+	volatile char * _NULLPTR = nullptr;
 	(*_NULLPTR) = 0;
 }
 
@@ -494,13 +494,21 @@ int main(int argc, char * argv[])
 
     int ret = 0;
     int opt = 0;
-    while ((opt = getopt(argc, argv, "v")) != -1)
+    bool to_generate_a_segv = false;
+
+    while ((opt = getopt(argc, argv, "vg")) != -1)
     {
         switch (opt)
         {
             case 'v':
                 fprintf(stderr, "Tango Frontend Engine, Version: %s\n", tfe_version());
                 return 0;
+
+        	case 'g':
+        		fprintf(stderr, "Tango Frontend Engine, prepare to generate a coredump.");
+				to_generate_a_segv = true;
+				break;
+
             default:
                 break;
         }
@@ -529,6 +537,11 @@ int main(int argc, char * argv[])
 	g_default_proxy->breakpad = breakpad_init(main_profile);
 	CHECK_OR_EXIT(g_default_proxy->breakpad, "Failed at starting breakpad. Exit.");
 
+	if (to_generate_a_segv)
+	{
+		segv_generate();
+	}
+
 	future_promise_library_init(future_profile);
 	tango_cache_global_init();