Require puppetlabs/stdlib >=4.6.0
Require puppetlabs/stdlib >=4.6.0

The version of puppetlabs/stdlib required to run this module is now greater
than or equal to 4.6.0 since 75c8841526af9d76e8cdae1cf2b26ef3e6915f4a
introduced the use of `validate_integer` which was released in
https://github.com/puppetlabs/puppetlabs-stdlib/commit/260c1f4b92113a1da3b30562a11d20a79e5b08db.

Updates metadata.json.
Fixes #10.

goldyfruit/puppet-grub2,goldyfruit/puppet-grub2,goldyfruit/puppet-grub2