[etcd-backup-restore]

Most notable changes

• [USER] Add support for Dell EMC ECS object store with S3 protocol (#254, @lcavajani)
• [DEVELOPER] Integration tests can be executed on any given Kubernetes cluster using the make integration-test-cluster target against the cluster pointed to by the environment variable INTEGRATION_TEST_KUBECONFIG. (#225, @shreyas-s-rao)

Improvements

• [OPERATOR] Clarify manual backup restore process (#224, @jfortin-sap)
• [OPERATOR] Fix snapshot metric initialization. (#223, @shreyas-s-rao)
• [DEVELOPER] Add TestMachinery integration. (#249, @shreyas-s-rao)