test if a node goes down, the cluster removes its control connection and pool (Xandra.TestClustering.IntegrationTest)

test if a node goes down and then rejoins, the cluster readds its control connection and pool (Xandra.TestClustering.IntegrationTest)

test connect and discover peers (Xandra.TestClustering.IntegrationTest)

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2, actions/cache@v2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/