fix dbg package names for stretch

manifests/packages.pp

@@ -10,15 +10,16 @@ class su_ldap::packages {
   }
 
   # Install a bunch of other packages that all depend on "slapd".
+  #
+  # Note that the debug package naming changed with Debian stretch.
+  # Since this Puppet model is intended for stretch and beyond
+  # we do not have to worry about previous versions of Debian.
   package{
-    'libldap-2.4-2-dbg':
+    'libldap-2.4-2-dbgsym':
       ensure  => installed,
       require => Package['slapd'];
     'libsasl2-modules-gssapi-mit':
       ensure  => installed;
-    'slapd-dbg':
-      ensure  => installed,
-      require => Package['slapd'];
     'ldap-utils':
       ensure  => installed,
       require => Package['slapd'];

templates/etc/apt/preferences.d/ldap.erb

@@ -16,14 +16,10 @@ Package: libldap-2.4-2
 Pin: release a=<%= @debian_distribution %>
 Pin-Priority: 999
 
-Package: libldap-2.4-2-dbg
-Pin: release a=<%= @debian_distribution %>
-Pin-Priority: 999
-
 Package: libldap2-dev
 Pin: release a=<%= @debian_distribution %>
 Pin-Priority: 999
 
-Package: slapd-dbg
+Package: libldap-2.4-2-dbgsym
 Pin: release a=<%= @debian_distribution %>
 Pin-Priority: 999