update indigo

* submodules/indigo 42e8274...25f27e9 (5):
  > Merge into master from pull request #128: locitest: remove duplicate unit test code (https://github.com/floodlight/indigo/pull/128)
  > Merge into master from pull request #126: Added OF_BSN_IMAGE_DESC_STATS_REQUEST to experimenter handler (https://github.com/floodlight/indigo/pull/126)
  > Merge into master from pull request #127: run_setup_from_add_tests() has been removed from locitest. (https://github.com/floodlight/indigo/pull/127)
  > Merge into master from pull request #124: remove IP mask map message handlers (https://github.com/floodlight/indigo/pull/124)
  > Merge into master from pull request #125: OFConnectionManager: fix permissions check for group-mod messages (https://github.com/floodlight/indigo/pull/125)
update loxigen-artifacts

* submodules/loxigen-artifacts 73a13e9...3ee25af (4):
  > Artifacts from https://github.com/floodlight/loxigen/compare/ffc28e6e06a516230942239b83f33b5d28a3a0f1...c14212426540c182ce50cf707d8440b077fe805c
  > Artifacts from https://github.com/floodlight/loxigen/compare/b4ab3f6d37180983c965f5939010089ff1fbcb67...ffc28e6e06a516230942239b83f33b5d28a3a0f1
  > Artifacts from https://github.com/floodlight/loxigen/compare/0a92b3a65bf1a247e8975ce77ea240550790723c...b4ab3f6d37180983c965f5939010089ff1fbcb67
  > Artifacts from https://github.com/floodlight/loxigen/compare/bbb582a37becb2ab88daf43e3ec028f17f8e8765...0a92b3a65bf1a247e8975ce77ea240550790723c
update loxigen-artifacts

* submodules/loxigen-artifacts 3ee25af...fc5b8fe (1):
  > Artifacts from https://github.com/floodlight/loxigen/compare/c14212426540c182ce50cf707d8440b077fe805c...feffbeb20c838ffeba38c71daec4d834cfb37900
update switchlight-common

* submodules/switchlight-common 149e2f9...3ecdd97 (1):
  > Merge into master from pull request #49: Add debug counter supports and ucli rxtx stat commands (https://github.com/floodlight/switchlight-common/pull/49)
Merge into master from pull request #154:
update submodules (https://github.com/floodlight/ivs/pull/154)