Send a VN delete UVE when a VN is deleted

Change-Id: I5b0a286cca4f7a81269d9cb419607be6701d219c
Closes-Bug: 1355933
bug fix for bugs 1355006, 1354579, 1354581, 1355712, 1354579

Change-Id: Ia64a03784b39ec65ec1e5949d89c817929726751
Merge "Send a VN delete UVE when a VN is deleted"
Promote a few tests from flaky to non-flaky

Change-Id: Id5933de0f6f12d2a6619a0e59d71461bf410b4e7
Create instance ip only if subnet is available.

Change-Id: I2aee296f8e140b3bda2f6bb7600ecd1c4ba7a834
Closes-Bug: 1360876
Merge "Promote a few tests from flaky to non-flaky"
Fix ASNUpdate test in rtarget_peer_test

Issue was that many of the config parameters got reset to default
values during the ASN change since the XML did not include older
values.  Fixed this by using a common config template for initial
and updated configuration.

Also add checks to make the test indirectly verify that BGP peers
get re-established.

Change-Id: Idb0a0d8fe91e8dbe25dbcacd3708832ce276e8af
Add avail_zone enable flag in service template

Moved queue_task_test to flaky list
https://jenkins.opencontrail.org/job/ci-contrail-controller-unittest/1641/console

Change-Id: Icffb554d324ce964851e823cae1bdfc85e5b5d81
Merge "bug fix for bugs 1355006, 1354579, 1354581, 1355712, 1354579"
Merge "Fix ASNUpdate test in rtarget_peer_test"
Merge "Add avail_zone enable flag in service template"