update diag commands and test

Author: ianopolous

src/main/java/io/ipfs/api/IPFS.java

@@ -445,8 +445,12 @@ public MerkleNode put(String inputFormat, byte[] object, String outputFormat) th
     }
 
     public class Diag {
-        public String net() throws IOException {
-            return new String(retrieve("diag/net?stream-channels=true"));
+        public String cmds() throws IOException {
+            return new String(retrieve("diag/cmds?stream-channels=true"));
+        }
+
+        public String sys() throws IOException {
+            return new String(retrieve("diag/sys?stream-channels=true"));
         }
     }
 

src/test/java/io/ipfs/api/APITest.java

@@ -695,7 +695,8 @@ public void diagTest() {
             Map setResult = ipfs.config.set("Datastore.Path", val);
             ipfs.config.replace(new NamedStreamable.ByteArrayWrapper(JSONParser.toString(config).getBytes()));
 //            Object log = ipfs.log();
-            String net = ipfs.diag.net();
+            String sys = ipfs.diag.sys();
+            String cmds = ipfs.diag.cmds();
         } catch (IOException e) {
             throw new RuntimeException(e);
         }