Fixed k8s deployment

[HakunMatat4]

These changes were necessary in order to get crAPI running successfully in a Kubernetes cluster.

I had reported the issues here: https://github.com/OWASP/crAPI/issues/207 But since I am already on it, it makes more sense to push the changes myself. I am not a kubernetes expert but those changes were necessary to get everything running.

• deploy.sh: Misconfiguration missing both the namespace and incomplete path to the keys
• identify config: API_GATEWAY_URL was missing causing it to crash and all the pods depending on it
• workshop config: API_GATEWAY_URL was missing causing it to crash so no access to the products
• postgresdb and mongodb: their storage only had the PersistentVolumeClaim, PersistentVolume was missing. It was also complaining about the storageClassName

Now you just run the usual: ./deploy