nmcli gets NM version and compares it with its own and complains
when they differ. This is to indicate that the results are not reliable,
because the API could differ. '--nocheck' switches the checks off.
Originally, nm-remote-settings was used by the daemon to monitor the
user settings service, and its subclass nm-remote-settings-system was
used by NM clients to monitor the system settings service. With user
settings services gone, this distinction is no longer needed. Simplify
things a bit and merge the classes.
Remove all support for user settings services from nmcli. Update its
manpage to reflect this.
Manpage edits also anticipate changes to be made in regards to how
secrets are managed.
Option '--multiline' was replaced with '--mode tabular|multiline'.
It was neccessary to be able to switch to tabular output mode for
'dev list' and 'con list id|uuid' commands as they now print out
in multiline mode by default. All other commands are in tabular
mode by default.
Modifications are mainly for multiline mode to ease parsing - each
field name is prefixed with a section name.
'dev list' now also supports printing particular sections specifed via
'--fields' option.
The output is basically tabular with fields (columns) presenting specific pieces of info.
Each line represents a single object. It's possible to switch to multiline output using
'--multiline' option. In that mode single object is presented on more lines - each field
on its line.
Terse mode now uses ':' as field separator. It also escapes all occurences of ':' and '\'
inside field values to ease parsing. The escaping behaviour can be controlled through
'--escape' option. By default, escaping is switched on in tabular mode. When using terse
mode ('--terse'), '--fields' option is mandatory for specifying required fields. That helps
for flexibility and backwards compatibility.
Not all output is converted yet.
