update indigo

* submodules/indigo 1806dec...66728a7 (1):
  > Merge into master from pull request #82: Generate error messages with relevant types/codes for 1.3 flow mods. (https://github.com/floodlight/indigo/pull/82)
update loxigen-artifacts

* submodules/loxigen-artifacts a58cae9...66ca386 (9):
  > Artifacts from https://github.com/floodlight/loxigen/compare/1e7c7219a666e15027d720f1a82d4f801dc2d337...f63d027cce0f71a58337cfd17d26f3d50c5ad775
  > Artifacts from https://github.com/floodlight/loxigen/compare/0887d3e1cef714a077fa87c8a605750ebbc0d066...1e7c7219a666e15027d720f1a82d4f801dc2d337
  > Artifacts from https://github.com/floodlight/loxigen/compare/17eaa9ce897e45b94d6c2cbb4a6f287c0ca70c05...0887d3e1cef714a077fa87c8a605750ebbc0d066
  > Artifacts from https://github.com/floodlight/loxigen/compare/6e294db14a7affef0f0061bcc6dcc92d3f101775...17eaa9ce897e45b94d6c2cbb4a6f287c0ca70c05
  > Artifacts from https://github.com/floodlight/loxigen/compare/31cc0668867d1eb9a2fc578bd56e935bad49a95c...6e294db14a7affef0f0061bcc6dcc92d3f101775
  > Artifacts from https://github.com/floodlight/loxigen/compare/1223812e8de24c740b5b7dba139a8c9e818e38c7...31cc0668867d1eb9a2fc578bd56e935bad49a95c
  > Artifacts from https://github.com/floodlight/loxigen/compare/527015eae8a000d79d6369fbe56c0fab59bdf0fa...1223812e8de24c740b5b7dba139a8c9e818e38c7
  > Artifacts from https://github.com/floodlight/loxigen/compare/08e2b473ef6ba64cd94ed40c4812b35cef0dcf93...527015eae8a000d79d6369fbe56c0fab59bdf0fa
  > Artifacts from https://github.com/floodlight/loxigen/compare/6310e32972c597bd460293fd87abccf1fa35d805...08e2b473ef6ba64cd94ed40c4812b35cef0dcf93
update switchlight-common

* submodules/switchlight-common 53a3611...d7da005 (6):
  > Merge into master from pull request #16: fix spell errors (https://github.com/floodlight/switchlight-common/pull/16)
  > Merge into master from pull request #15: added clear counters ucli (https://github.com/floodlight/switchlight-common/pull/15)
  > Merge into master from pull request #13: Add lldpa ucli supports (https://github.com/floodlight/switchlight-common/pull/13)
  > Merge into master from pull request #11: router_ip_table: include MAC address in the value (https://github.com/floodlight/switchlight-common/pull/11)
  > Merge into master from pull request #10: update sha1 for bigcode to include latest ppe changes for icmpa (https://github.com/floodlight/switchlight-common/pull/10)
  > Merge into master from pull request #9: update sha1 for loxigen-artifacts (https://github.com/floodlight/switchlight-common/pull/9)
Merge into master from pull request #95:
update submodules (https://github.com/floodlight/ivs/pull/95)