Maru startup failure when EL is not available

[fluentcrafter]

Maru fails to start when EL Hostname is not available. Maru should have a retry/pool mechanism otherwise, it's not ops-friendly when EL and CL nodes are deployed in parallel or there is a small network error.

2025-08-25 11:14:09.408 | INFO  | teku-status-log | Loading generated p2p private key from: /opt/consensys/maru/configs/private-key.txt
2025-08-25 11:14:09.786 | ERROR | CliEntrypoint | Execution failure:  java.net.UnknownHostException: besu-bootnode-0.besu-bootnode-0.default.svc.cluster.local: Name or service not known
	at java.base/java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
	at java.base/java.net.Inet6AddressImpl.lookupAllHostAddr(Unknown Source)
	at java.base/java.net.InetAddress$PlatformResolver.lookupByName(Unknown Source)
	at java.base/java.net.InetAddress.getAddressesFromNameService(Unknown Source)
	at java.base/java.net.InetAddress$NameServiceAddresses.get(Unknown Source)
	at java.base/java.net.InetAddress.getAllByName0(Unknown Source)
	at java.base/java.net.InetAddress.getAllByName(Unknown Source)
	at okhttp3.Dns$Companion$DnsSystem.lookup(Dns.kt:49)
	at okhttp3.internal.connection.RouteSelector.resetNextInetSocketAddress(RouteSelector.kt:169)
	at okhttp3.internal.connection.RouteSelector.nextProxy(RouteSelector.kt:131)
	at okhttp3.internal.connection.RouteSelector.next(RouteSelector.kt:73)
	at okhttp3.internal.connection.ExchangeFinder.findConnection(ExchangeFinder.kt:205)
	at okhttp3.internal.connection.ExchangeFinder.findHealthyConnection(ExchangeFinder.kt:106)
	at okhttp3.internal.connection.ExchangeFinder.find(ExchangeFinder.kt:74)
	at okhttp3.internal.connection.RealCall.initExchange$okhttp(RealCall.kt:255)
	at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.kt:32)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)
	at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.kt:95)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)
	at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.kt:83)