Remove duplicate tests and renamed some tests name (#225)

Author: RongtongJin

command/src/test/java/io/openmessaging/storage/dledger/command/DLedgerProxyConfigTest.java renamed to command/src/test/java/io/openmessaging/storage/dledger/command/CommandTest.java

@@ -23,7 +23,7 @@
 import org.junit.jupiter.api.Test;
 
 
-public class DLedgerProxyConfigTest {
+public class CommandTest {
 
     @Test
     public void TestParseArguments() {