Potential thundering herd HS upload once a day with hsv3
Here is a potential bug we found with dgoulet at HOPE.
set_rotation_time() we set the rotation time of the next descriptor to the next midnight UTC with no randomization at all:
service->state.next_rotation_time = sr_state_get_start_time_of_current_protocol_run() + sr_state_get_protocol_run_duration();
After descriptors get rotated, a new descriptor is built and uploaded, so it might be the case that all hsv3s upload that new descriptor at the same time at midnight UTC.
We should investigate more.