Add service_enable and service_ensure parameters.
Ensure zz_debconf.conf doesn't exist

Avoids https://bugs.launchpad.net/ubuntu/+source/apt-cacher-ng/+bug/1279021
which causes apt-cacher-ng to ignore the configured CacheDir settings in
acng.conf
Merge pull request #6 from pataquets/add-service-parameters

Add service_enable and service_ensure parameters
add pataquets to CONTRIBUTORS.md
fixed resource subscription conflict
Merge branch 'nhinds-remove-debconf-overrides'
added nhinds to CONTRIBUTORS
test puppet 3.6 too
change to "progress" rspec format
update Changelog

bump version to 0.1.7
built new module release
fix issues_url