Dynamically use helm release-name for Kubernetes resources

[MfCrizz]

Currently "unguard" is hard coded in many parts of the helm chart.

Use the helm release-name instead.
The helm release name can be referenced in the chart using the function {{- include "unguard.fullname" -}}
If ungaurd services (e.g. envoy-proxy) also use a hard-coded name, update service to specify the name via an environment variable.

Definition of Done

• All Kubernetes resources and application services use the helm release-name.

Tasks

• Update the Chart to use the helm release-name
• Update ungaurd services to use the helm release-name