Intial work on conpot py3

[xandfury]

My first GSoC PR 🎉 Need to add more tests but all in all this should deal with:

• Addition of tox for tests and CI, pytest for running tests
• Migration of conpot from py2.7 to py3.5
• Increase/addition in test cases for bacnet, kamstrup and guardian_ast
• WIP virtual file system for handling uploads

Note: While running tox for the firsttime, it could take a while. tox creates a fresh environment for us to test/run on. But essentially that takes care of the fact that travis brings no suprises. Plus extending it for py3.6 is a piece of cake. ;-)

Some helpful commands:

sudo tox  # would run all the tests and  start conpot -- mimic travis behaviour
sudo tox -e run -- conpot -f --template default  # would run conpot from inside tox's testing environment
sudo tox -e run -- python3  # would give you an interactive interpreter from the testing environment

[coveralls]

Pull Request Test Coverage Report for Build 1037

• 195 of 262 (74.43%) changed or added relevant lines in 37 files are covered.
• 27 unchanged lines in 10 files lost coverage.
• Overall coverage increased (+15.2%) to 59.633%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
conpot/core/databus.py	2	3	66.67%
conpot/protocols/snmp/conpot_cmdrsp.py	2	3	66.67%
conpot/protocols/modbus/slave.py	3	4	75.0%
conpot/protocols/modbus/modbus_server.py	2	3	66.67%
conpot/protocols/kamstrup/meter_protocol/command_responder.py	2	3	66.67%
conpot/protocols/http/web_server.py	6	7	85.71%
conpot/utils/ext_ip.py	0	1	0.0%
conpot/protocols/IEC104/IEC104_server.py	7	9	77.78%
conpot/protocols/guardian_ast/guardian_ast_server.py	11	13	84.62%
conpot/protocols/bacnet/bacnet_server.py	10	12	83.33%

Files with Coverage Reduction	New Missed Lines	%
conpot/protocols/kamstrup/meter_protocol/command_responder.py	1	90.63%
conpot/protocols/bacnet/bacnet_server.py	1	94.44%
conpot/protocols/ipmi/fakebmc.py	1	46.34%
conpot/protocols/IEC104/DeviceDataController.py	1	50.5%
conpot/protocols/kamstrup/usage_simulator.py	1	82.02%
conpot/protocols/IEC104/frames.py	1	59.22%
conpot/protocols/IEC104/IEC104_server.py	2	68.13%
conpot/protocols/ipmi/fakesession.py	3	9.25%
conpot/protocols/ipmi/ipmi_server.py	4	19.88%
conpot/protocols/http/command_responder.py	12	64.42%

Totals
Change from base Build 1033:	15.2%
Covered Lines:	3253
Relevant Lines:	5455

---

💛 - Coveralls

[creolis]

What a PR <3 ... Will review soon, thanks so far! Keep up the good work!