Printing issuer in the logs for debugging different Authentication mechanisms
This PR prints issuer in the logs for Istio. This is done as a part of this feature:-https://dev.azure.com/OpenEnergyPlatform/Open%20Energy%20Platform/_workitems/edit/5994
AAD is being used for Authentication and Authorization. Need issuer to check the different authentication mechanisms. This PR will add issuer to the logs.
Edited by Nishant Vidyasagar