NEC plugin: Allow to apply Packet filter on OFC router interface

Config parameter support_packet_filter_on_ofc_router is added
only to make the pluign work with the old version of PFC v5
which has no support of packet filter on vrouter interface.

Closes-Bug: #1384263
Change-Id: I2f54419e0b7c84c554ab2039ebaebdb065f9e502
Add assertion to test_page_reverse method

In neutron/tests/unit/test_api_v2.APIv2TestCase.test_page_reverse
there is no second call to test_case with 'page_reverse': 'False,
because of use assert_called_once_with.
In proposed change before second testcase, reset_mock is called.
Remove also second 'instance' initialization.

Closes-Bug: #1373126
Change-Id: I552b7b47456a1cdfccdeb8d7853ec3395317097a
Remove duplicate ensure_remove_chain method in iptables_manager

Change-Id: I168eda2fa430446786d4106d6807207f4facbfc3
Closes-Bug: #1388162
SRIOV: Fix Wrong Product ID for Intel NIC example

Some Examples and default Values of the Product ID for Intel NIC contains
Wrong Product ID that belongs to the PF product,
it should be replaced with the product ID of the VF.

Change-Id: I87291ea0458fa1ef7df1c06e17b7f9071ffb39e0
Closes-Bug: 1387152
Fix L3 HA network creation to allow user to create router

Update HA Network creation to use an admin context to allow Neutron
to create the tenant-less network required for the HA router when
it does not yet exist and is being created by a non-admin user.

Neutron creates these resources without a tenant so users cannot see
or modify the HA network, ports, etc.  Port creation and association
already use elivated admin contexts to allow their function when
an user attempts to create a HA L3 router.

Change-Id: I36166158a0970b8d08d6702054b11a43fb684281
Closes-Bug: #1388716
Merge "Fix L3 HA network creation to allow user to create router"
Merge "SRIOV: Fix Wrong Product ID for Intel NIC example"
Merge "Remove duplicate ensure_remove_chain method in iptables_manager"
Merge "Add assertion to test_page_reverse method"
Merge "NEC plugin: Allow to apply Packet filter on OFC router interface"