syz-hub: cap total number of programs sent to a manager
syz-hub: cap total number of programs sent to a manager

If we have way too many programs to send (more than 100000),
cap total number to 100000 and give up sending all.
Otherwise new managers will never chew all this on a busy hub.

google/syzkaller,google/syzkaller,xairy/syzkaller,xairy/syzkaller,xairy/syzkaller,xairy/syzkaller,google/syzkaller,xairy/syzkaller,google/syzkaller,xairy/syzkaller,google/syzkaller,google/syzkaller,xairy/syzkaller,google/syzkaller