[strongSwan] make before break and default activation

[Emeric POUPON]

> Hi Emeric,
> 
>> To be more specific:
>> - what happens exactly if it is enabled only on one side?
> 
> It only has an effect on the peer that initiates the reauthentication.
> Enabling it on a host that's always responder has no effect at all.

What happens on strongSwan>=5.3.0 if the peer that has the make-before-break option set initiates the reauthentication first?

Regards,

Emeric