propagate key eviction to slaves and AOF, like for expires, so that replicas...

propagate key eviction to slaves and AOF, like for expires, so that replicas and AOFs are always consistent even in maxmemory mode.

src/redis.c

@@ -1564,6 +1564,7 @@ void freeMemoryIfNeeded(void) {
             /* Finally remove the selected key. */
             if (bestkey) {
                 robj *keyobj = createStringObject(bestkey,sdslen(bestkey));
+                propagateExpire(db,keyobj);
                 dbDelete(db,keyobj);
                 server.stat_evictedkeys++;
                 decrRefCount(keyobj);