ejabberd: Move erlang installation into separate module

erlang/manifests/init.pp

@@ -0,0 +1,21 @@
+# Install erlang.
+#
+class erlang {
+
+  case $::operatingsystem {
+    'centos','redhat','fedora': {
+      package { 'erlang':
+        ensure => installed,
+      }
+    }
+    'debian','ubuntu': {
+      package { [ 'erlang', 'erlang-base' ]:
+        ensure => installed,
+      }
+    }
+    default: {
+      fail("erlang not supported on ${::operatingsystem}.")
+    }
+  }
+
+}