Implement TLS API Support

* Added flags to point to TLS PEM files to use for exposing and connecting
  to an encrypted remote API socket with server and client authentication.
* Added TLS fields for system connection ls templates.
* Added special "tls" format for system connection ls to list TLS fields
  in human-readable table format.
* Updated remote integration and system tests to allow specifying a
  "transport" to run the full suite against a unix, tcp, tls, or mtls
  system service.
* Added system tests to verify basic operation of unix, tcp, tls, and mtls
  services, clients, and connections.

Signed-off-by: Andrew Melnick <meln5674.5674@gmail.com>

vendor/go.podman.io/common/pkg/auth/auth.go

@@ -233,8 +233,7 @@ func parseCredentialsKey(arg string, acceptRepositories bool) (key, registry str
 		return "", "", err
 	}
 
-	split := strings.Split(key, "/")
-	registry = split[0]
+	registry, _, _ = strings.Cut(key, "/")
 
 	if !acceptRepositories {
 		return registry, registry, nil