addons: addressvirtual: enslave macvlans on vrf slaves to the vrf master

Ticket: CM-11803
Reviewed By: dsa, scotte, wkok, nikhil, julien
Testing Done: tested config of address-virtual lines on vrf slaves

This patch does the following:
- addressvirtual: enslaves macvlans created on vrf slaves
to the vrf master
- vrf: when looking for stale slaves on vrf master, skip
macvlan devices. This code does basic checking right now
and can be improved to include more cases.

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>

ifupdownaddons/iproute2.py

@@ -133,6 +133,8 @@ class iproute2(utilsBase):
                     elif citems[i] == 'vrf_slave':
                         linkattrs['kind'] = 'vrf_slave'
                         break
+                    elif citems[i] == 'macvlan' and citems[i + 1] == 'mode':
+                        linkattrs['kind'] = 'macvlan'
                 except Exception as e:
                     if warn:
                         self.logger.debug('%s: parsing error: id, mtu, state, link/ether, vlan, dummy, vxlan, local, remote, ageing, nolearning, vrf, table, vrf_slave are reserved keywords: %s' % (ifname, str(e)))