Remove CONF values from Token clients

To move Token clients to tempest-lib, this patch moves
CONF values from Token clients to the client setting and classes
instantiate Token clients.

Also making necessary changes in tests files.

Change-Id: Ie405ba6a71d29258e99d2f0b68afb013a9619e9b
diff --git a/tempest/tests/common/test_accounts.py b/tempest/tests/common/test_accounts.py
index f45f2cf..a836a20 100644
--- a/tempest/tests/common/test_accounts.py
+++ b/tempest/tests/common/test_accounts.py
@@ -73,7 +73,8 @@
         test_account_class = accounts.Accounts('test_name')
         hash_list = self._get_hash_list(self.test_accounts)
         test_cred_dict = self.test_accounts[3]
-        test_creds = auth.get_credentials(**test_cred_dict)
+        test_creds = auth.get_credentials(fake_identity.FAKE_AUTH_URL,
+                                          **test_cred_dict)
         results = test_account_class.get_hash(test_creds)
         self.assertEqual(hash_list[3], results)