Rename dirsrv_primary role

The term used in 389 docs is "supplier" instead (ex "master")

site-cookbooks/kosmos-dirsrv/recipes/hostsfile.rb

@@ -3,12 +3,12 @@
 # Recipe:: hostsfile
 #
 
-dirsrv_primary = search(:node, "role:dirsrv_primary AND chef_environment:#{node.chef_environment}").first
+dirsrv_supplier = search(:node, "role:dirsrv_supplier AND chef_environment:#{node.chef_environment}").first
 
-unless dirsrv_primary.nil?
-  primary_ip = dirsrv_primary['knife_zero']['host']
+unless dirsrv_supplier.nil?
+  supplier_ip = dirsrv_supplier['knife_zero']['host']
 
-  hostsfile_entry primary_ip do
+  hostsfile_entry supplier_ip do
     hostname  "ldap.kosmos.local"
     unique    true
   end