add gentoo support

manifests/client/install.pp

@@ -1,5 +1,7 @@
 class ssh::client::install {
-  package { $ssh::params::client_package_name:
-    ensure => present,
+  if !defined(Package[$ssh::params::client_package_name]) {
+    package { $ssh::params::client_package_name:
+      ensure => present,
+    }
   }
 }

manifests/params.pp

@@ -18,6 +18,14 @@
     }
     default: {
       case $::operatingsystem {
+        gentoo: {
+          $server_package_name = 'openssh'
+          $client_package_name = 'openssh'
+          $sshd_config = '/etc/ssh/sshd_config'
+          $ssh_config = '/etc/ssh/ssh_config'
+          $ssh_known_hosts = '/etc/ssh/ssh_known_hosts'
+          $service_name = 'sshd'
+        }
         default: {
           fail("Unsupported platform: ${::osfamily}/${::operatingsystem}")
         }

manifests/server/install.pp

@@ -1,6 +1,8 @@
 class ssh::server::install {
   include ssh::params
-  package { $ssh::params::server_package_name:
-    ensure => present,
+  if !defined(Package[$ssh::params::server_package_name]) {
+    package { $ssh::params::server_package_name:
+      ensure => present,
+    }
   }
 }