Handle the cases where LastScheduleTime is not updated in scheduler CR

[ispeakc0de]

What if becaus of some mishappening LastScheduledTime is not updated.

Lets say we have engines to be scheduled at 1, 3, 5, 7, 9 minutes and when we reach 5th min because of some update mishappening lastScheduledTime is still 1st min. Then from 5th to 9th min each and every schedule will fail.
That should not be the ideal case. Thats why there was a loop previously.

Originally posted by @Sanjay1611 in #17 (comment)