openstack-common.install: Fix a deprecated parameter in the puppet configuration

Warning: Setting templatedir is deprecated. See http://links.puppetlabs.com/env-settings-deprecations
(at /usr/lib/ruby/vendor_ruby/puppet/settings.rb:1095:in `block in issue_deprecations')
openstack-common.install: Fix typo indentation
Merge pull request #81 from goldyfruit/master

openstack-common.install: Fix a deprecated parameter in the puppet configuration