feat: time to bring back http2.0 support (#10230)

Bonus move our CI/CD to go1.14

cmd/prepare-storage.go

@@ -185,7 +185,6 @@ func IsServerResolvable(endpoint Endpoint) error {
 		tlsConfig = &tls.Config{
 			ServerName: endpoint.Hostname(),
 			RootCAs:    globalRootCAs,
-			NextProtos: []string{"http/1.1"}, // Force http1.1
 		}
 	}