Add 'deny' as an option for topics/patterns in acl file to allow certain...

Add 'deny' as an option for topics/patterns in acl file to allow certain topics to be explicitly denied when they might otherwise be allowed through a more open read/write/readwrite option. Example: 'topic readwrite test/#' and 'topic deny test/hello/#' may be added so that a user can read/write to all test/# topics, except for test/hello/#.

Signed-off-by: Brandt Hill <brandtlarsonhill@gmail.com>

Change variable name for clarity. Remember to initialize bool (I'm bad at C).

Signed-off-by: Brandt Hill <brandtlarsonhill@gmail.com>

Add documentation to config man page

Signed-off-by: Brandt Hill <brandtlarsonhill@gmail.com>

Add test case for deny option

Signed-off-by: Brandt Hill <brandtlarsonhill@gmail.com>

Add deny acls to top of the list to preserve early exit

Signed-off-by: Brandt Hill <brandtlarsonhill@gmail.com>

change comments

Signed-off-by: Brandt Hill <brandtlarsonhill@gmail.com>