bind_config: Added minimal support for Match keyword
Only "Match All" is supported, if any other criterion is used, the block
is ignored and the options are not applied.
It is important to note that only a subset of the supported keywords are
allowed to be used inside a Match block, currently being "LogLevel" the
only supported keyword.
Signed-off-by: Anderson Toshiyuki Sasaki <firstname.lastname@example.org>
Reviewed-by: Andreas Schneider <email@example.com>