Plane: added base leg WP to autoland #1452

Job	Run time
build (base)	2m 44s
build-gcc-heli	3m 42s
build (clang)	2m 41s
autotest (sitltest-copter-tests1a)	7m 49s
autotest (sitltest-copter-tests1b)	10m 3s
autotest (sitltest-copter-tests1c)	11m 50s
autotest (sitltest-copter-tests1d)	9m 33s
autotest (sitltest-copter-tests1e)	9m 47s
autotest (sitltest-copter-tests2a)	9m 28s
autotest (sitltest-copter-tests2b)	29m 58s
autotest-heli (sitltest-heli)	10m 30s
	1h 48m 5s

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