add @ to variables in template
Remove deprecation warnings for pin.pref.erb as well

Signed-off-by: Ken Barber <ken@bob.sh>
Update travis.yml to latest versions of puppet

Signed-off-by: Ken Barber <ken@bob.sh>
Merge branch 'template_deprecation_warnings'

* template_deprecation_warnings:
  Update travis.yml to latest versions of puppet
  Remove deprecation warnings for pin.pref.erb as well
  add @ to variables in template