Updates to openfast_io to match current dev branch API #3337

Job	Run time
build-all-debug-single	2m 51s
build-drivers-release	4m 26s
build-all-debug	6m 15s
build-postlib-release	10m 55s
build-test-uadriver-debug	2m 6s
rtest-module-drivers	4m 53s
rtest-modules-debug	10m 55s
build-fastfarm-release	12m 18s
build-openfast-release	4m 23s
build-interfaces-release	5m 24s
rtest-OF-5MW_Land_AeroMap	1m 16s
rtest-OF	15m 4s
rtest-OF-5MW_OC3Mnpl_DLL_WTurb_WavesIrr	2m 21s
rtest-OF-5MW_Land_BD_DLL_WTurb	2m 13s
rtest-OF-5MW_OC3Trpd_DLL_WSt_WavesReg	5m 30s
rtest-OF-5MW_OC4Jckt_DLL_WTurb_WavesIrr_MGrowth	2m 36s
rtest-OF-5MW_OC4Semi_WSt_WavesWN	1m 37s
rtest-OF-linearization	4m 25s
rtest-OF-simulink	11m 36s
rtest-openfast_io	6m 40s
rtest-interfaces	3m 24s
rtest-FF	2m 41s
	2h 3m 49s

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