Reduce wait between reneg test to 0.25s. Still robust and accelerates
the test as now we do up to 10 renego tests.
With the global loop timeout, the backoff identification seem unneeded.
But if we switch to 0.25s, we no longuer trigger the global timeout so
it is still valuable.
Adjust write out messages as bash do not support floating point number
arithmetic.
Some site hang/block the connection after some renego reties
Example: https://feedback.amadeus.com
Hand written timeout logic because:
- we want to get the result of the command in case of normal exit
- we want to have working log fd redirection
- we want to known the timeout condition
Emmanuel Fusté