Remove syslog collection from general and add new logs plug-in

Move all the syslog collection from the general plug-in to a new
logs plug-in and factor out the all_logs support from the
RedHatLogs class into the Logs superclass.

Signed-off-by: Bryn M. Reeves <bmr@redhat.com>
Move java data collection to separate plug-in

Signed-off-by: Bryn M. Reeves <bmr@redhat.com>
Move syslog and rsyslog configuratoin collection to logs plug-in

Signed-off-by: Bryn M. Reeves <bmr@redhat.com>