Upgrade puppetlabs-inifile to Release 1.1.1

This supported bugfix release corrects the inifile section header detection regex (so you can use more characters in your section titles).

More details: https://github.com/puppetlabs/puppetlabs-inifile/pull/115
Merge pull request #648 from johnsyweb/upgrade-inifile-1.1.1

Upgrade puppetlabs-inifile to Release 1.1.1