extend hybrid strategy for P1 hybrids

- allow gearshifts during brake already when below downshift (even if min shift time did not pass)
- if ICE operating point is already on drag curve (e.g. because auf a previous search) use this solution
- different handlich of dryrunsolution
- requestdryrun: correctly set state of AT gearbox etc. in test-powertrain
- requestdryrun: handle brakes in testpowertrain