Combine price feed transformers

- fetches logs from all three price feeds in one query
- assumes eth/usd price feed will be updated to include LogValue event
- updates transformers to run separate from header sync

environments/infura.toml

@@ -1,10 +1,7 @@
 [database]
-name = "vulcanize_public"
+name = "vulcanize_private"
 hostname = "localhost"
 port = 5432
 
 [client]
 ipcPath = "https://mainnet.infura.io/J5Vd2fRtGsw0zZ0Ov3BL"
-pepContractAddress = "0x99041F808D598B782D5a3e498681C2452A31da08"
-pipContractAddress = "0x729D19f657BD0614b4985Cf1D82531c67569197B"
-repContractAddress = "0xF5f94b7F9De14D43112e713835BCef2d55b76c1C"

environments/private.toml

@@ -5,6 +5,3 @@ port = 5432
 
 [client]
 ipcPath = "http://127.0.0.1:7545"
-pepContractAddress = "0x99041F808D598B782D5a3e498681C2452A31da08"
-pipContractAddress = "0x729D19f657BD0614b4985Cf1D82531c67569197B"
-repContractAddress = "0xF5f94b7F9De14D43112e713835BCef2d55b76c1C"

environments/public.toml.example

@@ -6,6 +6,3 @@ port = 5432
 [client]
 ipcPath = <local node's IPC filepath>
 levelDbPath = <local node's LevelDB chaindata filepath>
-pepContractAddress = <pep medianizer's address - see https://makerdao.com/feeds/ >
-pipContractAddress = <pip medianizer's address - see https://makerdao.com/feeds/ >
-repContractAddress = <rep medianizer's address - see https://makerdao.com/feeds/ >