When running on puppet 4.3, the dependency for the package
is set to 'apache2' but the actual package resource title
in the puppetlabs-apache is 'httpd'. This change removes
$http_service from being set depending on osfamily and
makes it set to 'httpd' for all.
Change-Id: I030446fabb7ec83c9ed94032e4ae54faff060e69
Closes-Bug: 1558131