Fixed syntax for puppet 4.0
Fixed syntax for puppet 4.0

Fixed unquoted numbers in 'mode' attribute for file as these must be
quoted when puppet 4.0. Leaving them unquoted raises depreciation
warnings on puppet 3.7  when the catalog is compiled, though not a
fatal error, best its fixed up before anyone migrates to puppet 4.0.

Deprecation warning was detected with puppet 3.8 and future parser
enabled.

andschwa/puppet-unattended_upgrades,poolski/puppet-unattended_upgrades,andschwa/puppet-unattended_upgrades,poolski/puppet-unattended_upgrades