conductor: add Prometheus query for total storage usage percentage (#… #2923

Job	Run time
Find directories with Dockerfiles	2s
Build and push images (./tembo-operator, tembo-operator)	4m 22s
Build and push images (./conductor, conductor)	4m 29s
Build and push images (./inference-gateway/docker/ai-proxy, ai-proxy)	27s
Build and push images (./inference-gateway/docker/inference, inference)	3m 30s
Build and push images (./inference-gateway, inference-gateway)	2m 11s
Build and push images (./dataplane-webserver, dataplane-webserver)	2m 34s
Build and push images (./tembo-pod-init, tembo-pod-init)	3m 51s
ArgoCD update automation (tembo-io/app-deploy-dev, dev, main)	14s
ArgoCD update automation (tembo-io/app-deploy, staging, staging-updates)	7s
ArgoCD update automation (tembo-io/app-deploy, prod, prod-updates)	13s
	22m 0s

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