Remove orc/oac from heat-cfntools dependency chain

With os-collect-config, we no longer use cfn-hup to run
os-refresh-config. Without that need, we no longer need os-apply-config to
configure cfn-hup.

Change-Id: I30029b9b74187ace66de4f4bb6620e8a88bd18f6
Merge "Remove orc/oac from heat-cfntools dependency chain"