Set / Display Hostname
Input
[ESP112]<hostname> json=<no> pwd=<admin/user password>
- 
json=no the output format can be in JSON or plain text 
- 
pwd= the admin password if authentication is enabled 
- 
hostname 
- if hostname is empty, it will display current hostname
- if hostname is not empty, it will set the hostname
Output
- In json format
- cmdId of requested command, should be- 112
- statusstatus of command, should be- ok
- datacontent of response, here the hostname
