Support Ubuntu 16.04 and PHP 7

[csdougliss]

By default it's hard coded to php5

Also get this error:

Error: Could not retrieve catalog from remote server: Error 400 on SERVER: Invalid parameter include on Apt::Source[newrelic] at /etc/puppet/modules/newrelic/manifests/params.pp:44

[cubiclelord]

Not sure about Ubuntu 16.04 but I was able to overwrite the php5 modules directory in hiera like this:

newrelic::agent::php::newrelic_php_conf_dir: '/etc/php/7.0/mods-available'

I'm installing PHP7 on Ubuntu 14.04 and this seems to work.

[gabriel403]

    class {'newrelic::agent::php':
      newrelic_license_key  => 'somelicensekey',
      newrelic_ini_appname  => $newrelic_name,
      newrelic_php_conf_dir => '/etc/php/7.0/mods-available',
    }