Dump contents of etcd v3 using the etcdhelper tool
Dump contents of etcd v3 using the etcdhelper tool

When we are running tests with etcd v3 enabled, the `curl` approach to
recursively dumping contents from etcd will not work, even with the
correct keyspace, as the contents are encoded in protobuf. The
`etcdhelper` tool allows us to make a plain-text dump of the full
contents.

Signed-off-by: Steve Kuznetsov <a7da0fca91d9933d2725d731a48cabdc9e8ffd7a@redhat.com>
Signed-off-by: Monis Khan <19f7b2d00144930eab99c4cfd2a8d2d2a225ef67@redhat.com>

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