Merge branch 'master' into python3

Merge branch 'master' into python3

* master:
  addons: address: process MTU before addrgen and adddresses
  ifupdownmain: support for marking interfaces as mgmt interfaces
  addons: bridge: fix TypeError: sequence item 0: expected string, int found
  addons: bridge: set bridge MTU after bridge creation addons: bridge: get bridge MTU from address policy not bridge
  addons: mstpctl: check mstpctl-stp and bridge-stp and fix bridge cache update
  lib: nlcache: fix dry_run exception
  addons: address: add support for a separate default mtu policy for eth interfaces
  debian: changelog: new 2.0.2-1 entry
  addons: ethtool: add support for "ethtool_ignore_errors" policy
  LinkUtils: mac_str_to_int: fix string to int conversion
  addons: dhcp: if mgmt vrf context exec dhclient in default vrf