Fix internal test suite

Two of the tests didn't initialize the random number generator.

server/core/test/testlogthrottling.cc

@@ -20,6 +20,7 @@
 #include <pthread.h>
 #include <semaphore.h>
 #include <maxscale/log_manager.h>
+#include <maxscale/random_jkiss.h>
 
 using std::cerr;
 using std::cout;
@@ -152,7 +153,7 @@ int main(int argc, char* argv[])
     int rc;
 
     std::ios::sync_with_stdio();
-
+    random_jkiss_init();
     rc = sem_init(&u_semstart, 0, 0);
     ensure(rc == 0);
 

server/core/test/testqueuemanager.c

@@ -66,6 +66,7 @@ test1()
     int input_counter = 0;
     int output_counter = 0;
 
+    random_jkiss_init();
     hkheartbeat = 0;
 
     queue = mxs_queue_alloc(TEST_QUEUE_SIZE, HEARTBEATS_TO_EXPIRE);