Add truncate-logs.sh to tools

Using chutney during my lightweight c++ tor client development for test cluster creation. When nodes are running for quite long time and under heavy load then log files can grow quite big. Not sure there is another way to control the size but I've just created a tool to truncate logs. After truncation logging works fine (when files deleted logging stopped completely).

added 1 commit

• d368cb5f - Add execute flag to truncate-logs.sh

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requested review from @nickm

Hm. It's more common to delete the logs and then send SIGHUP to the nodes, but I guess this could work too. I'll try it out!

merged

okay, merged!

@nickm Thanks for investing your time to review it!