server::grant_spec: Adapt test to correct function quoting.
server::grant_spec: Adapt test to correct function quoting.

Types must not be quoted neither for granting not checking,
and the overall expression must not be quoted for granting.

buzzdeee/puppetlabs-postgresql,buzzdeee/puppetlabs-postgresql,buzzdeee/puppetlabs-postgresql,puppetlabs/puppetlabs-postgresql,puppetlabs/puppetlabs-postgresql,puppetlabs/puppetlabs-postgresql