Adding service-entitlements-admin group to TenantInfo

All Submissions:

[YES/NO] Have you added an explanation of what your changes do and why you'd like us to include them?
[YES/NO] I have updated the documentation accordingly.
[YES/NO/NA] I have added tests to cover my changes.
[YES/NO/NA] All new and existing tests passed.
[YES/NO/NA] I have formatted the terraform code. (terraform fmt -recursive && go fmt ./...)

service.entitlements.admin group was missing from TenantInfo collection' TenantInfo should contain all the groups