BUG/MINOR: init: enforce strict-limits when using master-worker

BUG/MINOR: init: enforce strict-limits when using master-worker

The strict-limits global option was introduced with commit 0fec3ab7b
("MINOR: init: always fail when setrlimit fails"). When used in
conjuction with master-worker, haproxy will not fail when a setrlimit
fails. This happens because we only exit() if master-worker isn't used.

This patch removes all tests for master-worker mode for all cases covered
by strict-limits scope.

This should be backported from 2.1 onward.
This should fix issue #1042.

Reviewed by William Dauchy <wdauchy@gmail.com>