adding testcase 100.90
adding max_len action
adding max len changes
adding packet out fixes
adding indentation fixes
adding changes in Grp100 for merge
Update controller.py

Bug: We cannot poll for a OFPT_HELLO message because the enumeration makes that message zero and when we poll for that message the if condition fails and result is polling random openflow messages.

PS: Bug-fixed
Update controller.py
fixing errors
Merge pull request #43 from InCNTRE/Grp100No160

Update controller.py
Merge pull request #42 from InCNTRE/Grp100No90

Grp100 no90
Merge pull request #44 from InCNTRE/Grp30No80_1

Earlier all ports are set to be in flood mode which is the default, changed code to set only half ports to flood and check the behavior. Earlier flood rule was added with match on dst ip (244.0.0.1) but a normal tcp packet was being sent on data plane to check flood behavior and since flood bits were set by default, the test case passed. Now changed the packet sent on datapath to have dst ip 244.0.0.1.
deleting emergency flows as a final step
cleaning up comments
Update testgroup10.py
Merge pull request #45 from InCNTRE/grp10no110-cleanup

Grp10no110 cleanup
removing emergency flows as a last step
unsetting no_flood bit as a final step
Merge pull request #47 from InCNTRE/port-conf-revert

unsetting no_flood bit as a final step
Merge pull request #46 from InCNTRE/emer-table

removing emergency flows as a last step