Adopt post_injectors change from awx-plugins #10603

Job	Run time
awx-operator	12m 52s
api-test	17m 26s
api-migrations	14m 51s
api-lint	5m 17s
api-swagger	8m 48s
awx-collection	5m 57s
api-schema	11m 27s
dev-env	8m 26s
awx_collection integration (a-h, ^[a-h])	16m 37s
awx_collection sanity (stable-2.17)	1m 35s
awx_collection integration (i-p, ^[i-p])	19m 0s
awx_collection integration (r-z0-9, ^[r-z0-9])	17m 53s
combine awx_collection integration coverage	1m 5s
	2h 21m 14s

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