Sync gdbtest.py with latest upstream

Signed-off-by: Cleber Rosa <crosa@redhat.com>

tests/tests.yml

@@ -3,8 +3,8 @@
   - role: standard-test-avocado
     tests:
     - gdbtest.py:GdbTest.test_start_exit
-    - gdbtest.py:GdbTest.test_existing_commands
     - gdbtest.py:GdbTest.test_existing_commands_raw
+    - gdbtest.py:GdbTest.test_existing_commands
     - gdbtest.py:GdbTest.test_load_set_breakpoint_run_exit_raw
     - gdbtest.py:GdbTest.test_load_set_breakpoint_run_exit
     - gdbtest.py:GdbTest.test_generate_core
@@ -15,13 +15,9 @@
     - gdbtest.py:GdbTest.test_stream_messages
     - gdbtest.py:GdbTest.test_connect_multiple_clients
     - gdbtest.py:GdbTest.test_server_exit
-    - gdbtest.py:GdbTest.test_server_stdout
-    - gdbtest.py:GdbTest.test_server_stderr
     - gdbtest.py:GdbTest.test_multiple_servers
-    - gdbtest.py:GdbTest.test_interactive
-    - gdbtest.py:GdbTest.test_interactive_args
-    - gdbtest.py:GdbTest.test_exit_status
-    - gdbtest.py:GdbTest.test_interactive_stdout
+    - gdbtest.py:GdbTest.test_server_stderr
+    - gdbtest.py:GdbTest.test_server_stdout
     - gdbtest.py:GdbTest.test_remote
     required_packages:
     - gcc