Allow rspec-beaker to update.

Previously the dependencies for rspec-system were holding back rspec-beaker and specinfra.
I believe this Rake problem has been fixed upstream.
Require title of mysql_grant resource to match form user/table

This addresses https://tickets.puppetlabs.com/browse/MODULES-1040.
The user parameter is required to have the form username@host. A grant
is identified in the instances method by a name of the form
username@host/table. The resource will fail to be identified as already
existing if the name given to the resource does not match this form.
Merge pull request #522 from cmurphy/fix_mysql_grant_MODULES-1040

Require title of mysql_grant resource to match form user/table
Merge pull request #496 from apenney/fix-up-gemfile

Allow rspec-beaker to update.
fix beaker breakage: upgrade beaker-rspec, explicitly add vagrant-wrapper