Utilize instance variables for puppet templates for 3.2 compat

[jfryman]

Currently throwing this error:

Warning: Variable access via 'ssl' is deprecated. Use '@ssl' instead. template[/tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/slapd.conf.erb]:39
   (at /tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/slapd.conf.erb:39:in `block in result')

Warning: Variable access via 'isgroup' is deprecated. Use '@isgroup' instead. template[/tmp/vagrant-puppet/modules-0/sudoers/templates/sudoers.erb]:1
   (at /tmp/vagrant-puppet/modules-0/sudoers/templates/sudoers.erb:1:in `block in result')

Warning: Variable access via 'basedn' is deprecated. Use '@basedn' instead. template[/tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/domain_template.erb]:3
   (at /tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/domain_template.erb:3:in `block in result')

Warning: Variable access via 'rootdn' is deprecated. Use '@rootdn' instead. template[/tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/domain_template.erb]:4
   (at /tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/domain_template.erb:4:in `block in result')

Warning: Variable access via 'rootpw' is deprecated. Use '@rootpw' instead. template[/tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/domain_template.erb]:5
   (at /tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/domain_template.erb:5:in `block in result')

Warning: Variable access via 'name' is deprecated. Use '@name' instead. template[/tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/domain_template.erb]:6
   (at /tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/domain_template.erb:6:in `block in result')

Warning: Variable access via 'name' is deprecated. Use '@name' instead. template[/tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/domain_template.erb]:16
   (at /tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/domain_template.erb:16:in `block in result')

Warning: Variable access via 'rootdn' is deprecated. Use '@rootdn' instead. template[/tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/domain_template.erb]:22
   (at /tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/domain_template.erb:22:in `block in result')

Warning: Variable access via 'rootdn' is deprecated. Use '@rootdn' instead. template[/tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/domain_template.erb]:26
   (at /tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/domain_template.erb:26:in `block in result')

Warning: Variable access via 'basedn' is deprecated. Use '@basedn' instead. template[/tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/base.ldif.erb]:2
   (at /tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/base.ldif.erb:2:in `block in result')

Warning: Variable access via 'name' is deprecated. Use '@name' instead. template[/tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/base.ldif.erb]:6
   (at /tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/base.ldif.erb:6:in `block in result')

Warning: Variable access via 'name' is deprecated. Use '@name' instead. template[/tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/base.ldif.erb]:7
   (at /tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/base.ldif.erb:7:in `block in result')

Warning: Variable access via 'name' is deprecated. Use '@name' instead. template[/tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/base.ldif.erb]:8
   (at /tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/base.ldif.erb:8:in `block in result')

Warning: Variable access via 'rootdn' is deprecated. Use '@rootdn' instead. template[/tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/base.ldif.erb]:10
   (at /tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/base.ldif.erb:10:in `block in result')

Warning: Variable access via 'basedn' is deprecated. Use '@basedn' instead. template[/tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/base.ldif.erb]:11
   (at /tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/base.ldif.erb:11:in `block in result')

Warning: Variable access via 'rootdn' is deprecated. Use '@rootdn' instead. template[/tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/base.ldif.erb]:14
   (at /tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/base.ldif.erb:14:in `block in result')

Warning: Variable access via 'rootpw' is deprecated. Use '@rootpw' instead. template[/tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/base.ldif.erb]:16
   (at /tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/base.ldif.erb:16:in `block in result')

Warning: Variable access via 'basedn' is deprecated. Use '@basedn' instead. template[/tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/base.ldif.erb]:18
   (at /tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/base.ldif.erb:18:in `block in result')

Warning: Variable access via 'basedn' is deprecated. Use '@basedn' instead. template[/tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/base.ldif.erb]:23
   (at /tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/base.ldif.erb:23:in `block in result')

Warning: Variable access via 'basedn' is deprecated. Use '@basedn' instead. template[/tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/base.ldif.erb]:27
   (at /tmp/vagrant-puppet/modules-0/ldap/templates/server/openldap/base.ldif.erb:27:in `block in result')