Logentries-lecli

Logset management support.
Live tail support.
Api key management support.
Bug fixes/enhancements around configuration file and api url(s).
Breaking change: Removed deprecated commands: addusertoteam, adduser, createsavedquery, createteam, deletesavedquery, deleteteam, deleteuser, deleteuserfromteam, events, getowner, getsavedqueries, getsavedquery, getteams, getteam, listusers, recentevents, renameteam, updatesavedquery, usage

All management related APIs uses management_url configuration now.
ro_api_key and management_url is auto created in config file now.

Logset management is now supported

- Log management support.
- Commands now follow `lecli <action> <resource>` pattern.
- Deprecated old commands.