Add Puppet version check to start of role

This role relies heavily on Puppet 3 configuration paths.  This
patch helps get the current Puppet version which will make it
easier to control behaviour based on the major version of Puppet.

Change-Id: I17a8d06f842a870494bb986b8077fa6b4b4c2fc1

library/puppet_get_version

@@ -0,0 +1,51 @@
+#!/usr/bin/python
+
+# Copyright (c) 2016 VEXXHOST, Inc.
+#
+# This module 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.
+#
+# This software 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 this software.  If not, see <http://www.gnu.org/licenses/>.
+
+DOCUMENTATION = '''
+---
+module: puppet_get_version
+short_description: Retrieve the current Puppet version
+description:
+  - Retrieve the current Puppet version
+options: { }
+requirements: [ puppet ]
+author: Mohammed Naser
+'''
+
+
+def main():
+    module = AnsibleModule(argument_spec={})
+
+    global PUPPET_CMD
+    PUPPET_CMD = module.get_bin_path("puppet", False, ['/opt/puppetlabs/bin'])
+
+    if not PUPPET_CMD:
+        module.fail_json(
+            msg="Could not find puppet. Please ensure it is installed.")
+
+    # Check puppet version
+    rc, stdout, stderr = module.run_command(PUPPET_CMD + " --version")
+    version = stdout.strip()
+    major, minor, patch = version.split('.')
+    module.exit_json(full=version, major=int(major), minor=int(minor),
+                     patch=int(patch))
+
+# import module snippets
+from ansible.module_utils.basic import *
+
+if __name__ == '__main__':
+    main()

tasks/main.yml

@@ -1,4 +1,8 @@
 ---
+- name: check puppet version
+  puppet_get_version:
+  register: puppet_version
+
 - block:
   - name: ensure hiera directory
     file: