Allow other manifests to define ::apache::mod{ 'ssl': }.

This will allow Apache from the httpd24 SCL on RHELish systems to
include the proper mod_ssl package while still letting ssl
::apache::vhost defines work as expected.

Add package_name param to ::apache::mod::ssl.

Add a test for the package_name parameter.

Update the package_name parameter test.

manifests/mod/ssl.pp

@@ -3,6 +3,7 @@
   $ssl_options     = [ 'StdEnvVars' ],
   $ssl_cipher      = 'HIGH:MEDIUM:!aNULL:!MD5',
   $apache_version  = $::apache::apache_version,
+  $package_name    = undef,
 ) {
   $session_cache = $::osfamily ? {
     'debian'  => '${APACHE_RUN_DIR}/ssl_scache(512000)',
@@ -31,7 +32,9 @@
     }
   }
 
-  ::apache::mod { 'ssl': }
+  ::apache::mod { 'ssl':
+    package => $package_name,
+  }
 
   if versioncmp($apache_version, '2.4') >= 0 {
     ::apache::mod { 'socache_shmcb': }

spec/classes/mod/ssl_spec.rb

@@ -34,6 +34,15 @@
     it { is_expected.to contain_class('apache::params') }
     it { is_expected.to contain_apache__mod('ssl') }
     it { is_expected.to contain_package('mod_ssl') }
+    context 'with a custom package_name parameter' do
+      let :params do
+        { :package_name => 'httpd24-mod_ssl' }
+      end
+      it { is_expected.to contain_class('apache::params') }
+      it { is_expected.to contain_apache__mod('ssl') }
+      it { is_expected.to contain_package('httpd24-mod_ssl') }
+      it { is_expected.not_to contain_package('mod_ssl') }
+    end
   end
 
   context 'on a Debian OS' do