Fix ack receipt version support logic

[yangl]

Motivation

if (conf.isAckReceiptEnabled() &&
                    Commands.peerSupportsAckReceipt(clientCnx.getRemoteEndpointProtocolVersion())) {
                log.warn("Server don't support ack for receipt! " +
                        "ProtoVersion >=17 support! nowVersion : {}", clientCnx.getRemoteEndpointProtocolVersion());
            }

the ack receipt version support logic Commands.peerSupportsAckReceipt(clientCnx.getRemoteEndpointProtocolVersion()) should add not.

Modifications

add not !Commands.peerSupportsAckReceipt(clientCnx.getRemoteEndpointProtocolVersion()

[eolivelli]

good catch

[codelipenghui]

We don't have ack receipt in branch-2.7, so don't need to cherry-pick this fix to branch-2.7