Fix unit tests for apt module

This change include the declaration of the lsbdisrelease fact for debian
based systems due to the usage in puppetlabs-apt 2.3.0.  Previously this
fact was not used so tests passed under Puppet 4.5+.

Change-Id: Id1b5362ea088ce1978e78e4b14159e2310c19825

spec/classes/openstack_extras_repo_debian_debian_spec.rb

@@ -25,7 +25,8 @@ describe 'openstack_extras::repo::debian::debian' do
       @default_facts.merge({
         :osfamily        => 'Debian',
         :operatingsystem => 'Debian',
-        :lsbdistid       => 'Debian'
+        :lsbdistid       => 'Debian',
+        :lsbdistrelease  => '8'
       })
     end
 

spec/classes/openstack_extras_repo_debian_ubuntu_spec.rb

@@ -26,7 +26,8 @@ describe 'openstack_extras::repo::debian::ubuntu' do
         :osfamily        => 'Debian',
         :operatingsystem => 'Ubuntu',
         :lsbdistid       => 'Ubuntu',
-        :lsbdistcodename => 'trusty'
+        :lsbdistcodename => 'trusty',
+        :lsbdistrelease  => '14.04'
       })
     end