install rubygems for ubuntu/debian

Signed-off-by: Steven Armstrong <steven@icarus.ethz.ch>

cdist/conf/type/__package_rubygem/manifest

@@ -0,0 +1,33 @@
+#!/bin/sh
+#
+# 2014 Steven Armstrong (steven-cdist at armstrong.cc)
+#
+# This file is part of cdist.
+#
+# cdist is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# cdist is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with cdist. If not, see <http://www.gnu.org/licenses/>.
+#
+
+
+os=$(cat "$__global/explorer/os")
+
+case "$os" in
+   debian|ubuntu)
+      __package rubygems
+   ;;
+   *)
+      echo "Your operating system ($os) is currently not supported by this type (${__type##*/})." >&2
+      echo "Please contribute an implementation for it if you can." >&2
+      exit 1
+   ;;
+esac