Add Tempo Zipkin Egress Policy
The Tempo package contains a NetworkPolicy to allow ingress to the tempo pod on port 9411 to accept zipkin traces from the istio mesh.
Instead of coming from only the istio-system namespace each individual istio-proxy sidecar sends it's trace information directly to tempo, because of this we will need to explicitly define a NetworkPolicy to allow authservice to send it's tracing data to tempo:9411
See the existing policies for other package: