Batman-adv add the orig_interval to the lime-* config files and set a larger default value

[ilario]

Fix #1010

[ilario]

Tested on a YouHua WR1200JS with OpenWrt 22.03.
Works, also confirmed with tcpdump.

[G10h4ck]

In my experience even with the default value of 1000 batman-adv is quite slow to detect when a node goes down, sometimes even if other paths are available, the connection is broken until the fallen node comes back, I wonder how changing this setting will impact on that situation, hopefully it doesn't make things too much worse, let's merge this for now and keep an eye on how this setting alter the behaviour in larger networks