integrate icmp agent in ivs
OVSDriver: replace ind_ovs_port->config with a bitfield

The config bits are dependent on the OpenFlow wire version. Translating them to
a bitfield makes the internals version-independent.
OVSDriver: add version parameter to ind_ovs_key_to_match

The packet-in message will be formatted according to
indigo_cxn_get_async_version(), so the match should be too.
OVSDriver: use packet-in version to install suppression flows
ivs: always configure connections as OpenFlow 1.3

This just sets the maximum OpenFlow version we advertise.
ivs: remove ind_ovs_version

The only global configuration related to the OpenFlow version is the forwarding
pipeline. Everything else is done per-connection.

This change uses the --openflow-version command line option just as a fallback
(and backwards compatibility) for the --pipeline option.
ivs: document --pipeline option
Merge into master from pull request #98:
update switchlight-common (https://github.com/floodlight/ivs/pull/98)
Merge into master from pull request #97:
Get rid of ind_ovs_version (https://github.com/floodlight/ivs/pull/97)
Merge into master from pull request #99:
integrate icmp agent in ivs (https://github.com/floodlight/ivs/pull/99)
update loxigen-artifacts

* submodules/loxigen-artifacts 66ca386...12d3274 (7):
  > Artifacts from https://github.com/floodlight/loxigen/compare/ded3517401b92233c393ee8b082fa54fa68b18f4...30da69de767f2a2bd5ff10a8114d876d92cd19b6
  > Artifacts from https://github.com/floodlight/loxigen/compare/ee486e9db76d2bfc56808fe53be5a6db943b90cc...ded3517401b92233c393ee8b082fa54fa68b18f4
  > Artifacts from https://github.com/floodlight/loxigen/compare/6e92d6892ca13a65a31711f9aacd8da9e7d82ce5...ee486e9db76d2bfc56808fe53be5a6db943b90cc
  > Artifacts from https://github.com/floodlight/loxigen/compare/960fb527bbe2c4f5cbf02159c74b5ef7ff58fbe6...6e92d6892ca13a65a31711f9aacd8da9e7d82ce5
  > Artifacts from https://github.com/floodlight/loxigen/compare/074f7096e8fd4e7a63d2b9cbba68e60be9a87f31...960fb527bbe2c4f5cbf02159c74b5ef7ff58fbe6
  > Artifacts from https://github.com/floodlight/loxigen/compare/f8498dd3102a8e03596d821c1b1c9ca80e4145d7...074f7096e8fd4e7a63d2b9cbba68e60be9a87f31
  > Artifacts from https://github.com/floodlight/loxigen/compare/f63d027cce0f71a58337cfd17d26f3d50c5ad775...f8498dd3102a8e03596d821c1b1c9ca80e4145d7
update switchlight-common

* submodules/switchlight-common 00423d2...c805010 (1):
  > Merge into master from pull request #19: arpa: unicast requery, broadcast requery, and idle timeouts (https://github.com/floodlight/switchlight-common/pull/19)