migrate from file resource to concat

this allows us to use this defined type as often as we want (which is
the purpose of a defined type). Each usage of it creates an entry in
$user/.ssh/config. This is not a breaking change since you can still use
the resource as before. However, you can now call it multiple types by
setting a unique name for it + providing user => $user as a parameter.

Use case: define a block in each puppet profile you have.

Notice: I needed to bump the concat dependency by a major release, this
means that the next release of this software also should be a major one,
even if the API of this module has no breaking changes.

manifests/client/config/user.pp

@@ -9,13 +9,12 @@
   Hash $options                                 = {},
   Optional[Stdlib::Absolutepath] $target        = undef,
   Optional[Stdlib::Absolutepath] $user_home_dir = undef,
+  String $user                                  = $name,
 )
 {
 
   include ::ssh::params
 
-  $_files_ensure = $ensure ? { 'present' => 'file', 'absent' => 'absent' }
-
   # If a specific target file was specified,
   # it must have higher priority than any
   # other parameter.
@@ -25,7 +24,7 @@
   }
   else {
     if ($user_home_dir == undef) {
-      $_user_home_dir = "/home/${name}"
+      $_user_home_dir = "/home/${user}"
     }
     else {
       validate_absolute_path($user_home_dir)
@@ -36,20 +35,28 @@
     $_target      = "${user_ssh_dir}/config"
 
     if ($manage_user_ssh_dir == true) {
-      file { $user_ssh_dir:
-        ensure => directory,
-        owner  => $name,
-        mode   => $::ssh::params::user_ssh_directory_default_mode,
-        before => File[$_target],
+      unless defined(File[$user_ssh_dir]) {
+        file { $user_ssh_dir:
+          ensure => directory,
+          owner  => $user,
+          mode   => $::ssh::params::user_ssh_directory_default_mode,
+          before => Concat_file[$_target],
+        }
       }
     }
   }
 
-  file { $_target:
-    ensure  => $_files_ensure,
-    owner   => $name,
-    mode    => $::ssh::params::user_ssh_config_default_mode,
+  unless defined(Concat_file[$_target]) {
+    concat_file{$_target:
+      ensure => $ensure,
+      owner  => $user,
+      mode   => $::ssh::params::user_ssh_config_default_mode,
+      tag    => $user,
+    }
+  }
+  concat_fragment{$name:
+    tag     => $user,
     content => template("${module_name}/ssh_config.erb"),
+    target  => $_target,
   }
-
 }

metadata.json

@@ -52,7 +52,7 @@
     },
     {
       "name": "puppetlabs/concat",
-      "version_requirement": ">= 1.2.5 < 3.0.0"
+      "version_requirement": ">= 2.2.0 < 3.0.0"
     }
   ]
 }