update indigo to 9e7b84487d53ddd9e5ac9e235c3bec5eb3e0ada0
oftest.py: support running tests for OpenFlow 1.3
Merge into master from pull request #32:
update indigo to 9e7b84487d53ddd9e5ac9e235c3bec5eb3e0ada0 (https://github.com/floodlight/ivs/pull/32)