Vehicle Gun Spawning Fix #1925

Job	Run time
code-tests (CODE)	4m 42s
map-tests (operation_trebuchet)	1m 57s
map-tests (slayer)	3m 54s
map-tests (firefight)	1m 45s
code-tests (WEB)	4m 57s
map-tests (crusade)	1m 49s
map-tests (stranded)	1m 51s
map-tests (first_contact)	2m 20s
map-tests (ks7_elmsville)	3m 23s
map-tests (ks7_elmsville_spaceodp)	3m 25s
map-tests (base_assault)	2m 14s
map-tests (base_assault_unsc_defend_vs_urf)	2m 9s
map-tests (unsc_achlys)	1m 53s
map-tests (base_assault_neutral_base)	2m 17s
map-tests (base_assault_neutral_base_taurus)	2m 22s
map-tests (geminus_city)	3m 18s
map-tests (geminus_city_urf_active)	3m 10s
map-tests (system_conquest)	8m 12s
	55m 38s

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