fix intel+callgrind usage in minibrunel for scheduler, also add two trigger lines example

added mock example for two trigger lines + fixed usage of intel+callgrind in minibrunel for scheduler.

Since these are two quite seperated changes, I can also, if needed, split them up into two MRs. However, I did not see the need since they are both uninvasive.

Depends on Rec!1200 (merged)

@cattanem please unWIP as you see fit.