Donal McBreen b25cfa178b Limit SSH start concurrency ...

Starting many (90+) SSH connections has caused us some issues such as
failed DNS lookups and hitting process file descriptor limits.

To mitigate this, patch SSHKit::Backend::Netssh to limit concurrency of
connection starts. We'll default to 30 at a time which seems to work
without issue, but can be configured via:

```
sshkit:
  max_concurrent_starts: 10
```

2023-07-25 13:08:44 +01:00

..

mrsk

Limit SSH start concurrency

2023-07-25 13:08:44 +01:00

mrsk.rb

Minor: Properly require active_support

2023-03-14 23:29:00 +01:00