Correct Ubuntu 16.04 packages

This corrects some module packages for Ubuntu 16.04. suphp was actually
removed. The other packages are transitional packages. Using the modern
ones aligns them with newer versions. It also greatly simplifies the
params code.

Author: ekohl

manifests/params.pp

@@ -389,9 +389,10 @@
         'wsgi'                  => 'libapache2-mod-wsgi',
         'xsendfile'             => 'libapache2-mod-xsendfile',
       }
-    } elsif ($::operatingsystem == 'Debian' and versioncmp($::operatingsystemrelease, '9') >= 0) or ($::operatingsystem == 'Ubuntu' and versioncmp($::operatingsystemrelease, '18.04') >= 0) {
+    } else {
       $php_version = $facts['operatingsystemmajrelease'] ? {
         '9'     => '7.0', # Debian Stretch
+        '16.04' => '7.0', # Ubuntu Xenial
         '10'    => '7.3', # Debian Buster
         '20.04' => '7.4', # Ubuntu Foccal Fossal
         default => '7.2', # Ubuntu Bionic, Cosmic and Disco
@@ -423,36 +424,6 @@
         'wsgi'                  => 'libapache2-mod-wsgi',
         'xsendfile'             => 'libapache2-mod-xsendfile',
       }
-    } else {
-      # Ubuntu Xenial
-      $php_version = '7.0'
-      $mod_packages = {
-        'auth_cas'              => 'libapache2-mod-auth-cas',
-        'auth_kerb'             => 'libapache2-mod-auth-kerb',
-        'auth_openidc'          => 'libapache2-mod-auth-openidc',
-        'auth_gssapi'           => 'libapache2-mod-auth-gssapi',
-        'auth_mellon'           => 'libapache2-mod-auth-mellon',
-        'authnz_pam'            => 'libapache2-mod-authnz-pam',
-        'dav_svn'               => 'libapache2-svn',
-        'fastcgi'               => 'libapache2-mod-fastcgi',
-        'fcgid'                 => 'libapache2-mod-fcgid',
-        'geoip'                 => 'libapache2-mod-geoip',
-        'intercept_form_submit' => 'libapache2-mod-intercept-form-submit',
-        'jk'                    => 'libapache2-mod-jk',
-        'lookup_identity'       => 'libapache2-mod-lookup-identity',
-        'nss'                   => 'libapache2-mod-nss',
-        'pagespeed'             => 'mod-pagespeed-stable',
-        'passenger'             => 'libapache2-mod-passenger',
-        'perl'                  => 'libapache2-mod-perl2',
-        'phpXXX'                => 'libapache2-mod-phpXXX',
-        'python'                => 'libapache2-mod-python',
-        'rpaf'                  => 'libapache2-mod-rpaf',
-        'security'              => 'libapache2-modsecurity',
-        'shib2'                 => 'libapache2-mod-shib2',
-        'suphp'                 => 'libapache2-mod-suphp',
-        'wsgi'                  => 'libapache2-mod-wsgi',
-        'xsendfile'             => 'libapache2-mod-xsendfile',
-      }
     }
     $error_log           = 'error.log'
     $scriptalias         = '/usr/lib/cgi-bin'