Move tower attachment from PlatformMotion to NacelleMotion #726

Job	Run time
build-postlib-release	17m 17s
build-all-debug-single	5m 42s
build-all-debug	7m 53s
build-drivers-release	7m 11s
build-test-uadriver-debug	2m 35s
rtest-module-drivers	3m 27s
rtest-modules-debug	6m 42s
build-interfaces-release	4m 31s
build-fastfarm-release	14m 26s
build-openfast-release	4m 11s
rtest-OF-5MW_OC3Mnpl_DLL_WTurb_WavesIrr	5m 1s
rtest-OF-5MW_OC4Jckt_DLL_WTurb_WavesIrr_MGrowth	1m 36s
rtest-OF-5MW_Land_BD_DLL_WTurb	3m 22s
rtest-OF	14m 41s
rtest-OF-5MW_OC3Trpd_DLL_WSt_WavesReg	8m 27s
rtest-OF-5MW_OC4Semi_WSt_WavesWN	2m 43s
rtest-OF-linearization	2m 40s
rtest-interfaces	13m 14s
rtest-FF	2m 44s
	2h 8m 23s

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