Exclude brackets from the name as this makes sensu barf

Re-apply commit which was originally
d85c270db31e0bde549a71b191b7c34da147eced
as this was accidentally removed in commit
95ef05e2d3d2e2a568f229b9dc2f533e2d2cecb6
Merge pull request #135 from bobtfish/exclude_brackets_from_name

Exclude brackets from the name as this makes sensu barf
Merge git://github.com/sensu/sensu-puppet