Add istio control plane dashboard and alert rule #1117

Job	Run time
Publish Charm / Generate the Charm Matrix	2s
Run Tests / Integration Test (1.27-strict/stable, integration)	1h 1m 39s
Run Tests / Observability Integration Test (1.25-strict/stable)	6m 9s
Run Tests / Integration Test (1.27-strict/stable, integration-tls-provider)	1h 1m 21s
Run Tests / Observability Integration Test (1.26-strict/stable)	6m 17s
Run Tests / Integration Test (1.27-strict/stable, integration-tls-secret)	1h 1m 23s
Run Tests / Lint Code (pilot)	22s
Run Tests / Integration Test (1.30-strict/stable, integration)	1h 1m 41s
Run Tests / Unit Test (pilot)	37s
Run Tests / Lint Code (gateway)	23s
Run Tests / Integration Test (1.30-strict/stable, integration-tls-provider)	1h 1m 39s
Run Tests / Unit Test (gateway)	31s
Run Tests / Integration Test (1.30-strict/stable, integration-tls-secret)	59m 18s
Run Tests / Check libraries (istio-gateway) / Lint	10s
Run Tests / Check libraries (istio-gateway) / Check libraries	31s
Run Tests / Check libraries (istio-pilot) / Check libraries	25s
Run Tests / Check libraries (istio-pilot) / Lint	9s
Publish Charm / Publish Charm (./charms/istio-gateway)	31m 14s
Publish Charm / Publish Charm (./charms/istio-pilot)	41m 54s
	7h 35m 45s

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