Moving admin_peers to Admin API group (#473)

ethereum/jsonrpc/src/main/java/tech/pegasys/pantheon/ethereum/jsonrpc/JsonRpcMethodsFactory.java

@@ -202,8 +202,7 @@ public class JsonRpcMethodsFactory {
           enabledMethods,
           new NetVersion(protocolSchedule.getChainId()),
           new NetListening(p2pNetwork),
-          new NetPeerCount(p2pNetwork),
+          new NetPeerCount(p2pNetwork));
-          new AdminPeers(p2pNetwork));
     }
     if (rpcApis.contains(RpcApis.WEB3)) {
       addMethods(enabledMethods, new Web3ClientVersion(clientVersion), new Web3Sha3());
@@ -217,6 +216,9 @@ public class JsonRpcMethodsFactory {
           minerSetCoinbase,
           new MinerSetEtherbase(minerSetCoinbase));
     }
+    if (rpcApis.contains(RpcApis.ADMIN)) {
+      addMethods(enabledMethods, new AdminPeers(p2pNetwork));
+    }
     // @formatter:off
     return enabledMethods;
   }

ethereum/jsonrpc/src/main/java/tech/pegasys/pantheon/ethereum/jsonrpc/RpcApis.java

@@ -22,6 +22,7 @@ public class RpcApis {
   public static final RpcApi MINER = new RpcApi("MINER");
   public static final RpcApi NET = new RpcApi("NET");
   public static final RpcApi WEB3 = new RpcApi("WEB3");
+  public static final RpcApi ADMIN = new RpcApi("ADMIN");
 
   public static final Collection<RpcApi> DEFAULT_JSON_RPC_APIS = Arrays.asList(ETH, NET, WEB3);
 
@@ -36,6 +37,8 @@ public class RpcApis {
       return Optional.of(NET);
     } else if (name.equals(WEB3.getCliValue())) {
       return Optional.of(WEB3);
+    } else if (name.equals(ADMIN.getCliValue())) {
+      return Optional.of(ADMIN);
     } else {
       return Optional.empty();
     }

ethereum/jsonrpc/src/test/java/tech/pegasys/pantheon/ethereum/jsonrpc/JsonRpcHttpServiceTest.java

@@ -94,7 +94,7 @@ public class JsonRpcHttpServiceTest {
   protected static BlockchainQueries blockchainQueries;
   protected static Synchronizer synchronizer;
   protected static final Collection<RpcApi> JSON_RPC_APIS =
-      Arrays.asList(RpcApis.ETH, RpcApis.NET, RpcApis.WEB3);
+      Arrays.asList(RpcApis.ETH, RpcApis.NET, RpcApis.WEB3, RpcApis.ADMIN);
   protected final JsonRpcTestHelper testHelper = new JsonRpcTestHelper();
 
   @BeforeClass