Add enterprise subsidy to devstack #695

Job	Run time
run_ci (ubuntu-20.04, 3.11, discovery+lms+forum)	21m 57s
run_ci (ubuntu-20.04, 3.11, registrar+lms)	17m 28s
run_ci (ubuntu-20.04, 3.11, ecommerce+lms)	20m 59s
run_ci (ubuntu-20.04, 3.11, edx_notes_api+lms)	17m 7s
run_ci (ubuntu-20.04, 3.11, credentials+lms)	17m 12s
run_ci (ubuntu-20.04, 3.11, xqueue)	3m 9s
run_ci (ubuntu-20.04, 3.11, analyticsapi+insights+lms)	22m 56s
run_ci (ubuntu-20.04, 3.11, designer+lms)	18m 21s
run_ci (ubuntu-20.04, 3.11, enterprise-subsidy+enterprise-catalog+enterprise-access+lms)	23m 22s
run_ci (ubuntu-20.04, 3.11, license-manager+lms)	17m 50s
	3h 0m 21s

Provide feedback