modemmanager-next: Stop respawning after 3 crashes in 30 seconds

BUG=b:220060734
TEST=crash MM 3 times using  killall -s SIGKILL ModemManager, check MM does not respawn.

Change-Id: I84985c1190bfba06d64ebd828ff7de398f3f5a3a
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/3491519
Commit-Queue: Pavan Holla <pholla@google.com>
Tested-by: Pavan Holla <pholla@google.com>
Auto-Submit: Pavan Holla <pholla@google.com>
Reviewed-by: Madhav <madhavadas@google.com>
Commit-Queue: Madhav <madhavadas@google.com>
1 file changed