Deploy

Merge updates to use Nexus repository with image pull secret and run istio-galley on non-privileged port.

Added --validation-port=8085 in the deployment template istio-installation048.yaml.j2 for the container command. This changes the https validation port from 443 to 8085 on the istio-galley container so that it does not need root privileges.

Changed the readiness/liveliness paths in the command to be under /tmp and changed the probes to use those new paths in order to not require root access.