[mysql] make sure db credentials are not part of dump file name

Since we pass --user and --password on the mysqldump command line
we need to use suggest_filename to prevent those values appearing
in report paths.

Signed-off-by: Bryn M. Reeves <bmr@redhat.com>
[mysql] add all_logs option

Add an 'all_logs' option to the MySQL / MariaDB plugin to allow
the old behaviour of collecting all logs files to be requested.

Signed-off-by: Bryn M. Reeves <bmr@redhat.com>
[rpm] reduce number of calls to rpm

Fixes #300.

Signed-off-by: Bryn M. Reeves <bmr@redhat.com>
[filesys] collect dumpe2fs -h output by default

Fixes #297.

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