As of compute microversion >= 2.21, support for list and show of server
events for deleted servers was added. This however wasn't working using
the openstackclient because the compute GET /servers/{server_id} will
not return a deleted server, so osc_lib.utils.find_resource() fails to
find the server and the command bails early.
This adds a check for a uuid-like <server> arg and uses it directly if
the <server> cannot be found via find_resource().
A note is also added to the command help to indicate that list and show
for deleted servers will only work if a server ID is passed (name will
not work).
Story: 2009841
Task: 44443
Change-Id: Icd33b3b9a3a1855d7893dd111bbb2aca059f45fd
72a2477ec0