allow pytest --migrations to succeed #7888

Job	Run time
awx-operator	19m 21s
awx_collection sanity	1m 15s
dev-env	4m 47s
api-test	5m 10s
api-lint	1m 44s
api-swagger	3m 22s
awx-collection	1m 51s
awx_collection integration (a-h, ^[a-h])	10m 32s
api-schema	5m 56s
awx_collection integration (i-p, ^[i-p])	13m 49s
ui-lint	2m 37s
awx_collection integration (r-z0-9, ^[r-z0-9])	11m 39s
ui-test-screens	7m 41s
ui-test-general	4m 7s
combine awx_collection integration coverage	4m 41s
	1h 38m 32s

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