tools: fix some special commands for reloading pim

tools: fix some special commands for reloading pim

The issue is we can't remove all pim configurations including some
special configurations (e.g., `no ip pim bsm`) for one interface.

For one pim-disable interface, all such pim depdendent options
(including `ip pim ` and `no ip pim `) should be completely removed.

Also append `no ip multicast` for the same purpose, it is no use at present,
but for future use.

The running config:
```
interface A
 ip pim
 no ip pim bsm
exit
```

Reload the new config:
```
interface A
exit
```

Before:
```
2024-10-05 20:52:33,467  INFO: Executed "interface A  no ip pim exit"
2024-10-05 20:52:33,482  INFO: Executed "interface A  ip pim bsm exit"
```
And the pim configurations in running configuration are not removed after reloading:
```
interface A
 ip pim <- Wrong
exit
```

After:
```
2024-10-05 20:56:27,489  INFO: Executed "interface A  no ip pim exit"
```
And all the pim configuration are removed.

Signed-off-by: anlan_cs <anlan_cs@126.com>