Incorporate otb 8 compatible images in test baseline
The current test baseline has images generated with SARCalibration and OrthoRectofication applications from OTB 7.x
It should be updated to:
- either incorporate OTB 8 based reference images as well -- this will take some space on the S3
- or supersede OTB 7 images with OTB 8 ones -- this won't permit to continue testing S1TIling with OTB 7.