test: unit test fixes for vtable exception

Seeing the following unit test failures due to duplicate
objects being put onto the dbus.  This is likely due to a
change in an underlying library to be more stringent.  Changed
the object path for the second objects to avoid the exception.

[ RUN      ] TestSNMPClient.CheckPersistency
unknown file: Failure
C++ exception with description "sd_bus_add_object_vtable:
org.freedesktop.DBus.Error.FileExists: File exists" thrown in the test body.
[  FAILED  ] TestSNMPClient.CheckPersistency (0 ms)

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I16f06cc1249ebc2c6957b8429141ba0d02b05fb9
diff --git a/test/test_snmp_client.cpp b/test/test_snmp_client.cpp
index fe49f2b..04fbdf8 100644
--- a/test/test_snmp_client.cpp
+++ b/test/test_snmp_client.cpp
@@ -65,11 +65,13 @@
 {
     std::string objPath = mgrObjPath;
     objPath += "/" + std::to_string(1);
+    std::string objPath2 = mgrObjPath;
+    objPath2 += "/" + std::to_string(2);
 
     Client client(bus, objPath.c_str(), manager, "1.1.1.1", 23);
     client.address("2.2.2.2");
 
-    Client restoreClient(bus, objPath.c_str(), manager);
+    Client restoreClient(bus, objPath2.c_str(), manager);
     auto persistentPath = manager.dbusPersistentLocation;
     persistentPath += "/1";
     deserialize(persistentPath, restoreClient);