Name server context

The commands available for the NameServer context are:

• EXIT/QUIT - exits CLI and closes connection to Axigen
• HELP - prints this help message
• BACK - cancels any changes made and switches back to the previous context
• DONE - saves the changes and switches back to previous context
• SHOW [ATTR <param>] - shows information about this context
• SET [priority <priority>] - sets the priority of the nameserver
• SET [address <address>] - sets the IP of the nameserver
• SET [timeout <timeout>] - sets the timeout for first DNS query
• SET [retries <retries>] - sets the maximum number of DNS queries retries