Execute arbitrary RPC commands

[krihal]

It should be possible to execute random RPC commands towards a device.

Example:

controller> rpc exec juniper my_devices_* show interfaces

[olofhagsand]

First version:

olof@alarik> connection open
olof@alarik> rpc openconfig1 ?
  clixon-lib:debug                    Set debug flags of backend.                                   
  clixon-lib:ping                     Check aliveness of backend daemon.                            
  clixon-lib:process-control          Control a specific process or daemon: start/stop, etc.        
  clixon-lib:restart-plugin           Restart specific backend plugins.                             
  ...
olof@alarik> rpc openconfig1 clixon-lib:debug yang 
rpc debug {
   description "Set debug flags of backend.
             Note only numerical values";
   input {
      leaf level {
         type uint32;
      }
   }
}
olof@alarik> rpc openconfig1 clixon-lib:debug '<level>1</level>'
olof@alarik> 

[olofhagsand]

see https://clixon-controller-docs.readthedocs.io/en/latest/cli.html#rpc-templates

[krihal]

Verified!