Cleanup bgpvpn envtries at the end of test

At the moment bgpvpns are removed when all tests finished in class
resource_cleanup. The patch adds addCleanup() at the places
where bgpvpn entries are created to let them cleanned after single
test finished.

Also add cleanup for some API tests that were completely missing.

Related-Prod: PRODX-12050
Change-Id: I94229f2d6cc3331a61a57e5d03231fa8640857b6
diff --git a/neutron_tempest_plugin/bgpvpn/base.py b/neutron_tempest_plugin/bgpvpn/base.py
index b436a5d..46c2c78 100644
--- a/neutron_tempest_plugin/bgpvpn/base.py
+++ b/neutron_tempest_plugin/bgpvpn/base.py
@@ -17,6 +17,7 @@
 from tempest.common import utils
 from tempest import config
 from tempest.lib.common.utils import data_utils
+from tempest.lib.common.utils import test_utils
 
 from neutron_tempest_plugin.bgpvpn.services import bgpvpn_client
 
@@ -34,12 +35,6 @@
     bgpvpn_alt_client = None
 
     @classmethod
-    def resource_cleanup(cls):
-        for bgpvpn in cls.bgpvpns:
-            cls.bgpvpn_admin_client.delete_bgpvpn(bgpvpn['id'])
-        super(BaseBgpvpnTest, cls).resource_cleanup()
-
-    @classmethod
     def resource_setup(cls):
         cls.route_distinguishers = []
         cls.bgpvpns = []
@@ -87,9 +82,9 @@
 
         body = client.create_bgpvpn(**kwargs)
         bgpvpn = body['bgpvpn']
-        self.bgpvpns.append(bgpvpn)
+        self.addCleanup(test_utils.call_and_ignore_notfound_exc,
+                        self.bgpvpn_admin_client.delete_bgpvpn, bgpvpn['id'])
         return bgpvpn
 
     def delete_bgpvpn(self, client, bgpvpn):
         client.delete_bgpvpn(bgpvpn['id'])
-        self.bgpvpns.remove(bgpvpn)