Add maintenance assignment dynamic scope #7

Job	Run time
Load Test Scenarios Matrix	3s
azuread/100-azuread_administrative_units	31s
azuread/100-azuread-application-with-sevice-principle-with-builtin-roles	24s
azuread/100-sevice-principle-with-builtin-roles	32s
azuread/101-azuread_administrative_unit_member	30s
azuread/101-azuread-application-with-service-principle-with-custom-roles	30s
azuread/101-service-principle-with-custom-roles	23s
azuread/102-password-rotation	31s
azuread/103-service-principal-only	34s
azuread/104-azuread-group-membership	29s
azuread/105-azuread-application-with-optional-claims	22s
azuread/106-azuread-application-with-api-scopes	28s
azuread/108-azuread-application-with-app-roles	48s
azuread/201-groups-and-roles	29s
	6m 34s

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