Stepan Blyshchak 2d4299308d [swss.sh/syncd.sh] Trap only on EXIT (#11590) ...

When using trap on SIGTERM the script will not react to the SIGTERM signal sent while a child is executing.
I.e, the following script does not react on SIGTERM sent to it if it is
waiting for sleep to finish:

```

trap "echo Handled SIGTERM" 0 2 3 15

echo "Before sleep"
sleep inf
echo "After sleep"
```

Instead, trap only on EXIT which covers also a scenario with exit on
SIGINT, SIGTERM.

Signed-off-by: Stepan Blyschak <stepanb@nvidia.com>

2022-08-10 20:57:07 -07:00

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