I was quite lucky as my interview was way back in late feb / 1st week of march thereabout. Interview took about 1 week (first and final interview in same week, 2 days apart), offered on day after final interview, wait about 2 weeks for HR to prepare contract, signed around late March...which was why I was very lucky to start work right before the circuit breaker measures kicked in.

Anyway don't worry, i had a small chat with HR and it seems they're resorting to e-interviews / telecommute / emails in the meantime. Just know that hiring processes will now be a lot slower and tedious because 98% of the public service is working from home. Which naturally brings more inconvenience and delays. If you haven't, drop the HR a message and ask when soonest can you hear back (what i did). Good luck!