Changes from the upstream review

Change-Id: Icda967a72463d6777b9c791c5e51424312c9889d
Delete dictionary items which have ATTR_NOT_SPECIFIED

Change-Id: Idf13457cac065ec8cdb386239a9596beb0ace617
support for allowed address pair in neutron plugin

Change-Id: I44192aed2bd0a59a65322d6c76b329f4df602270
Bug 1337803: To avoid internal server error in case of malformed error message being received from API server, catch JSONDeodeError

Change-Id: I1782c7501b4b7cc618aaa523c254f1b62a90573f
Check for quota being present before accessing it

Change-Id: I383741fb330f9b8fa3dc5fd6aab837d2989d2f2f
Enable tests

Change-Id: I64c0d583fe0ebe1fb73bde9edd1b46e0bd7408c0
Merge "Check for quota being present before accessing it"