Replace os-client-config

It was deprecated[1] after the code was merged into openstacksdk[2].

[1] https://review.opendev.org/c/openstack/os-client-config/+/549307
[2] https://review.opendev.org/c/openstack/openstacksdk/+/518128

Change-Id: I0cc581153c73a9dacc8a160fd63f9cb95660ef3a
Signed-off-by: Takashi Kajinami <kajinamit@oss.nttdata.com>

observabilityclient/tests/functional/base.py

@@ -22,7 +22,7 @@ from observabilityclient import client
 
 from keystoneauth1 import loading
 from keystoneauth1 import session
-import os_client_config
+from openstack import config as occ
 from tempest.lib.cli import output_parser
 from tempest.lib import exceptions
 import testtools
@@ -33,8 +33,8 @@ LOG = logging.getLogger(__name__)
 
 class PythonAPITestCase(testtools.TestCase):
     def _getKeystoneSession(self):
-        conf = os_client_config.OpenStackConfig()
-        creds = conf.get_one_cloud(cloud=ADMIN_CLOUD).get_auth_args()
+        conf = occ.OpenStackConfig()
+        creds = conf.get_one(cloud=ADMIN_CLOUD).get_auth_args()
         ks_creds = dict(
             auth_url=creds["auth_url"],
             username=creds["username"],

test-requirements.txt

@@ -1,5 +1,5 @@
 python-openstackclient>=6.3.0 # Apache-2.0
-os-client-config>=1.28.0 # Apache-2.0
+openstacksdk>=0.10.0 # Apache-2.0
 stestr>=2.0.0 # Apache-2.0
 tempest>=10 # Apache-2.0
 testtools>=1.4.0 # MIT