php cli defaults to 7.0 update-alternatives

Hi there, I had a problem where even if I set:
php::globals::php_version: '5.6'

php cli would still be version 7 on ubuntu.

after troubleshooting I found that php-cli 7.0 has a higher priority in update-alternatives than php-cli 5.6
i solved it like this, but thought I'd just give you a heads-up

`$php_minversion = hiera('php::globals::php_version')

class { '::php': }

set the PHP CLI to php::globals::php_version

exec { "update-alternatives-php${php_minversion}":
command => "/usr/bin/update-alternatives --quiet --install /usr/bin/php php /usr/bin/php${php_minversion} 100 && /usr/bin/update-alternatives --auto php",
unless => "/bin/ls -l /etc/alternatives/php | /bin/grep ${php_minversion}",
require => Class['::php'],
}`

Start by tracing how php::globals::php_version is applied when the PHP class configures the CLI, then compare that behavior with the update-alternatives command shown in the issue. Done means selecting the configured PHP version on Ubuntu instead of leaving PHP 7.0 active; no source files or tests are named.