Reorder fixture to preserve config db changes (sonic-net#12420)

## Description of PR

Summary:
Fixes # (issue)27603887

### Type of change

- [x] Bug fix
- [ ] Testbed and Framework(new/improvement)
- [ ] Test case(new/improvement)

## Approach
#### What is the motivation for this PR?

When ipv6 fixture runs, it overrides changes made by telemetry fixture for setting up testing environment for telemetry.

#### How did you do it?

Have ipv6 fixture run before telemetry fixture.

#### How did you verify/test it?

Manual test

Author: zbud-msft

tests/ip/test_mgmt_ipv6_only.py

@@ -12,7 +12,7 @@
 from tests.syslog.test_syslog import run_syslog, check_default_route # noqa F401
 from tests.common.fixtures.duthost_utils import convert_and_restore_config_db_to_ipv6_only  # noqa F401
 from tests.common.helpers.gnmi_utils import GNMIEnvironment
-from tests.telemetry.conftest import setup_streaming_telemetry # noqa F401
+from tests.telemetry.conftest import gnxi_path, setup_streaming_telemetry # noqa F401
 
 pytestmark = [
     pytest.mark.disable_loganalyzer,
@@ -123,9 +123,9 @@ def test_rw_user_ipv6_only(localhost, duthosts, enum_rand_one_per_hwsku_hostname
 
 
 @pytest.mark.parametrize('setup_streaming_telemetry', [True], indirect=True)
-def test_telemetry_output_ipv6_only(duthosts, enum_rand_one_per_hwsku_hostname,
-                                    setup_streaming_telemetry, # noqa F811
-                                    convert_and_restore_config_db_to_ipv6_only): # noqa F811
+def test_telemetry_output_ipv6_only(convert_and_restore_config_db_to_ipv6_only, # noqa F811
+                                    duthosts, enum_rand_one_per_hwsku_hostname,
+                                    setup_streaming_telemetry): # noqa F811
     duthost = duthosts[enum_rand_one_per_hwsku_hostname]
     env = GNMIEnvironment(duthost, GNMIEnvironment.TELEMETRY_MODE)
     if duthost.is_supervisor_node():