Draft: Implementation of Aurora service block scan for datamerging

technical merge request, not to be merged!

• includes implementation for Aurora service block scan as presented May 25th at tracker week
• scan should be implemented seperately from bertest, just 'hacked' bertest for 'quick and dirty' implementation
• changes bertest.h to add new settings
• changes bertest.cc to include chain2test options 3, 4 and 5
  • each option performs a threshold scan with nSteps TAP0 settings up to maxTAP0, nReps repetitions and serviceBlockafterN blocks of data for a time of runtime.
  • option 3 performs the scan as described
  • option 4 performs the scan for different settings of serviceBlockafterN \in \{0, ..., nReps\}
  • option 5 performs the scan for different settings of runtime \in \{0, runtime/nReps, ..., runtime\}