[PAN-2601] Renamed AccountPermissioningProver to TransactionPermissioningProvider to better reflect the interface. (#1432)

Signed-off-by: Adrian Sutton <adrian.sutton@consensys.net>

ethereum/permissioning/src/main/java/tech/pegasys/pantheon/ethereum/permissioning/account/TransactionPermissioningProvider.java

@@ -15,6 +15,6 @@ package tech.pegasys.pantheon.ethereum.permissioning.account;
 import tech.pegasys.pantheon.ethereum.core.Transaction;
 
 @FunctionalInterface
-public interface AccountPermissioningProvider {
+public interface TransactionPermissioningProvider {
   boolean isPermitted(final Transaction transaction);
 }