Clean up configuration loader (and support deletion of de-configured DP).
Clean up configuration loader (and support deletion of de-configured DP).

shivarammysore/faucet,byllyfish/faucet,trungdtbk/faucet,shivarammysore/faucet,trungdtbk/faucet,mwutzke/faucet,trentindav/faucet,REANNZ/faucet,mwutzke/faucet,faucetsdn/faucet,Bairdo/faucet,wackerly/faucet,REANNZ/faucet,gizmoguy/faucet,byllyfish/faucet,trentindav/faucet,faucetsdn/faucet,anarkiwi/faucet,Bairdo/faucet,wackerly/faucet,anarkiwi/faucet,gizmoguy/faucet