[Platform CI] Builds always failing due to intermittent connection issues

fatal: unable to access 'https://github.com/nuxeo/nuxeo-lts.git/': Could not resolve host: github.com; Unknown error

Error: looks like "https://chartmuseum.platform.dev.nuxeo.com/" is not a valid chart repository or cannot be reached: Get "https://chartmuseum.platform.dev.nuxeo.com/index.yaml": dial tcp: lookup chartmuseum.platform.dev.nuxeo.com on 10.63.240.10:53: read udp 10.60.14.28:42449->10.63.240.10:53: i/o

Could not transfer artifact org.apache.logging.log4j:log4j-api:pom:2.17.1 from/to nexus-internal (http://nexus/repository/maven-upstream/): nexus: Name or service not known: Unknown host nexus: Name or service not known -> [Help 1]

09:45:54,719 [kafka-producer-network-thread | nuxeo-test-1647855943411-testComplexTopoManyRecordsOnePartition-output-300] WARN  [NetworkClient] [Producer clientId=nuxeo-test-1647855943411-testComplexTopoManyRecordsOnePartition-output-300] Error connecting to node kafka-0.kafka-headless.platform-nuxeo-unit-tests-2021-302-runtime.svc.cluster.local:9092 (id: 0 rack: null)
java.net.UnknownHostException: kafka-0.kafka-headless.platform-nuxeo-unit-tests-2021-302-runtime.svc.cluster.local
	at java.net.InetAddress$CachedAddresses.get(InetAddress.java:797) ~[?:?]
	at java.net.InetAddress.getAllByName0(InetAddress.java:1509) ~[?:?]
	at java.net.InetAddress.getAllByName(InetAddress.java:1368) ~[?:?]
	at java.net.InetAddress.getAllByName(InetAddress.java:1302) ~[?:?]
	at org.apache.kafka.clients.ClientUtils.resolve(ClientUtils.java:110) ~[kafka-clients-2.6.0.jar:?]
	at org.apache.kafka.clients.ClusterConnectionStates$NodeConnectionState.currentAddress(ClusterConnectionStates.java:403) ~[kafka-clients-2.6.0.jar:?]
	at org.apache.kafka.clients.ClusterConnectionStates$NodeConnectionState.access$200(ClusterConnectionStates.java:363) ~[kafka-clients-2.6.0.jar:?]
	at org.apache.kafka.clients.ClusterConnectionStates.currentAddress(ClusterConnectionStates.java:151) ~[kafka-clients-2.6.0.jar:?]
	at org.apache.kafka.clients.NetworkClient.initiateConnect(NetworkClient.java:958) [kafka-clients-2.6.0.jar:?]
	at org.apache.kafka.clients.NetworkClient.ready(NetworkClient.java:294) [kafka-clients-2.6.0.jar:?]
	at org.apache.kafka.clients.producer.internals.Sender.sendProducerData(Sender.java:351) [kafka-clients-2.6.0.jar:?]
	at org.apache.kafka.clients.producer.internals.Sender.runOnce(Sender.java:324) [kafka-clients-2.6.0.jar:?]
	at org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:240) [kafka-clients-2.6.0.jar:?]
	at java.lang.Thread.run(Thread.java:829) [?:?]

2022-03-22 13:51:06.639+0000 [id=80]	WARNING	c.c.j.GitHubRepositoryName$1#applyNullSafe: Failed to obtain repository com.cloudbees.jenkins.GitHubRepositoryName$1@371a9d51
java.net.UnknownHostException: api.github.com
	at java.base/java.net.InetAddress$CachedAddresses.get(InetAddress.java:797)
	at java.base/java.net.InetAddress.getAllByName0(InetAddress.java:1509)
	at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1368)
	at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1302)
	at okhttp3.Dns$Companion$DnsSystem.lookup(Dns.kt:49)