server: support arbiter node config introduced by PR#182

Author: pecharmin

manifests/server.pp

@@ -53,6 +53,7 @@
   Optional[String] $replset                            = undef,
   Optional[Hash] $replset_config                       = undef,
   Optional[Array] $replset_members                     = undef,
+  Optional[String] $replset_arbiter                    = undef,
   Optional[Boolean] $configsvr                         = undef,
   Optional[Boolean] $shardsvr                          = undef,
   Optional[Boolean] $rest                              = undef,
@@ -112,8 +113,8 @@
   # Set-up replicasets
   if $replset {
     # Check that we've got either a members array or a replset_config hash
-    if $replset_members and $replset_config {
-      fail('You can provide either replset_members or replset_config, not both.')
+    if ( $replset_members or $replset_arbiter ) and $replset_config {
+      fail('You can provide either replset_members incl. replset_arbiter or replset_config, not both.')
     } elsif !$replset_members and !$replset_config {
       # No members or config provided. Warn about it.
       warning('Replset specified, but no replset_members or replset_config provided.')
@@ -128,6 +129,7 @@
           "${replset}" => {
             'ensure'   => 'present',
             'members'  => $replset_members,
+            'arbiter'  => $replset_arbiter,
           },
         }
       }