NETVIRT-1536: Stale flows in ACL tables
Stale flows in ACL tables specific to security rules are observed when
delete events received by neutronvpn and ACL are as specified below:
(1) Neutron Port Event
(2) Neutron SG Event
(3) ACL Interface/State Event
(4) ACL Event (accesslist-acl)
In order to fix this issue, introduced 'deleted' in ACE yang
definition. When SG rule is deleted, ACE would not be deleted,
instead 'deleted' would be set. ACL Event listener after
processing add/delete ACE entries, deletes all the marked ACE
entries of the ACL being updated.
Change-Id: I47ef5328bf05bbed02c5492967005cd4c41f99d6
Signed-off-by: Shashidhar Raja <shashidharr@altencalsoftlabs.com>