Rework firstcyc job

[KateFriedman-NOAA]

Cycled mode currently has a firstcyc job in the first half cycle. It's dependency is currently on the existence of the rocoto log 4 cycles later. This dependency often holds up the forward progress of the 4th cycle when the cycle throttle of 3 is met because firstcyc isn't done yet and therefore the first half cycle can't complete and become Inactive (freeing up a cycle in cyclethrottle).

Easy workaround is to increase cycle throttle to 4 in live experiments but better yet, a review of the need/use of firstcyc job should happen. Review how the firstcyc job is used and, if needed, update what its dependency should be. Remove if not truly required.

[KateFriedman-NOAA]

Work complete, thanks @JianKuang-UMD !