Simplify scriptalias template
Simplify scriptalias template

The data type only allows an array for scriptaliases so there is no need
to check for the type. It is also checked at in vhost.pp that the value
is set so there's no need to repeat that logic in the template.

puppetlabs/puppetlabs-apache,puppetlabs/puppetlabs-apache,traylenator/puppetlabs-apache,traylenator/puppetlabs-apache