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

Bonus move our CI/CD to go1.14

cmd/lock-rest-client.go

@@ -149,7 +149,6 @@ func newlockRESTClient(endpoint Endpoint) *lockRESTClient {
 		tlsConfig = &tls.Config{
 			ServerName: endpoint.Hostname(),
 			RootCAs:    globalRootCAs,
-			NextProtos: []string{"http/1.1"}, // Force http1.1
 		}
 	}