pmlogconf and "force" control line setting in setup group files

[DoubleBB]

When setup group file contains "force available" or "force include"control line, pmlogconf won't include the metrics in the created conf and does not ask for its inclusion in interactive run, even.
I think this is a bug of pmlogconf on handling the "force" control.

You may see this behaviour with

/var/lib/pcp/config/pmlogconf/filesystem/all

#pmlogconf-setup 2.0
ident generic filesystem size, fullness and mount information
force available
filesys

in this case changing the "force available" to "probe filesys exists ? include : exclude " solve the problem, but there are some other involved files using "force" control.