Clarify application of the ha-scopes command in the actual deployments

ha-scopes command can modify servers scopes without changing its role and other HA parameters. It can be a powerful tool, but its use can put the server in a state that will be very confusing for the Administrator.

I think this command requires more documentation and warnings about its usage.

For example:
We have a hot standby pair and send the ha-scopes command to the standby server, enabling scopes of both servers. This results in primary and standby servers replying to DHCP traffic. But the second server still reports as in a standby state. This can lead to massive confusion for Administrators.