light: return light client status on rpc /status (#7536)

*light: rpc /status returns status of light client ; code refactoring
 light: moved lightClientInfo into light.go, renamed String to ID
test/e2e: Return light client trusted height instead of SyncInfo trusted height
test/e2e/start.go: Not waiting for light client to catch up in tests. Removed querying of syncInfo in start if the node is a light node

* light: Removed call to primary /status. Added trustedPeriod to light info
* light/provider: added ID function to return IP of primary and witnesses
* light/provider/http/http_test: renamed String() to ID()

test/e2e/runner/start.go

@@ -118,8 +118,17 @@ func Start(ctx context.Context, testnet *e2e.Testnet) error {
 		wcancel()
 
 		node.HasStarted = true
+
+		var lastNodeHeight int64
+
+		// If the node is a light client, we fetch its current height
+		if node.Mode == e2e.ModeLight {
+			lastNodeHeight = status.LightClientInfo.LastTrustedHeight
+		} else {
+			lastNodeHeight = status.SyncInfo.LatestBlockHeight
+		}
 		logger.Info(fmt.Sprintf("Node %v up on http://127.0.0.1:%v at height %v",
-			node.Name, node.ProxyPort, status.SyncInfo.LatestBlockHeight))
+			node.Name, node.ProxyPort, lastNodeHeight))
 	}
 
 	return nil