changed cplhist and multilev_cplhist taxmode from extend to cycle

[mvertens]

Specific notes

Coupler history files should be cycled over if the run years are larger than the number of coupler history files.

Contributors other than yourself, if any:

CDEPS Issues Fixed:

Are there dependencies on other component PRs (if so list): No

Are changes expected to change answers bfb - unless you run pass the end date of cplhist or cplhist_multiplev data

Any User Interface Changes (namelist or namelist defaults changes): None

Testing performed (e.g. aux_cdeps, CESM prealpha, etc):

Hashes used for testing:

[mvdebolskiy]

CDEPS test-suite preformed, I assume?

[mvertens]

CDEPS test-suite preformed, I assume?

I did not run it - since these changes will not be picked up by the test suite. But I'm happy to kick off the test suite. Do we have baselines?