Add edx exams service to Devstack #773

Job	Run time
run_ci (ubuntu-24.04, 3.11, discovery+lms+forum)	21m 31s
run_ci (ubuntu-24.04, 3.11, registrar+lms)	16m 54s
run_ci (ubuntu-24.04, 3.11, ecommerce+lms)	20m 19s
run_ci (ubuntu-24.04, 3.11, edx_notes_api+lms)	17m 26s
run_ci (ubuntu-24.04, 3.11, credentials+lms)	16m 41s
run_ci (ubuntu-24.04, 3.11, xqueue)	1m 52s
run_ci (ubuntu-24.04, 3.11, analyticsapi+insights+lms)	21m 32s
run_ci (ubuntu-24.04, 3.11, designer+lms)	16m 6s
run_ci (ubuntu-24.04, 3.11, enterprise-subsidy+enterprise-catalog+enterprise-access+lms)	22m 28s
run_ci (ubuntu-24.04, 3.11, license-manager+lms)	16m 29s
run_ci (ubuntu-24.04, 3.11, edx-exams+lms)	16m 16s
	3h 7m 34s

Provide feedback