Description of problem:
Currently there is no way to supply a CA root to Istio via the operator.
Please add a way to be able to do so.
I apologize, however, work for istio is not tracked in bugzilla. Requests for bug fixes and future features should be made through your CEE representative and should eventually be opened in https://issues.jboss.org/browse/MAISTRA
I am going to close this BZ as WONTFIX, however hopefully you can get better results once the issue is filed with the correct team.