After moving Permit() to the scheduling cycle test PermitPlugin should
no longer wait inside Permit() for another pod to enter Permit() and become waiting pod.
In the past this was a way to make test work regardless of order in
which pods enter Permit(), but now only one Permit() can be executed at
any given moment and waiting for another pod to enter Permit() inside
Permit() leads to timeouts.
In this change waitAndRejectPermit and waitAndAllowPermit flags make first
pod to enter Permit() a waiting pod and second pod to enter Permit()
either rejecting or allowing pod.
Mentioned in #88469
b93e3d18e9